{{Infobox Doctor Who episode
| number             = Number of story or episode within the series.
| serial_name        = Alias episode_name. Serial/episode name. (Formatting will be applied automatically.)
| show               = Switch parameter for Doctor Who and its spinoffs: "DW" (Doctor Who), "TW" (Torchwood),
                       "SJA" or "TSJA" (The Sarah Jane Adventures), "C" (Class), "K9C" (K-9 and Company), or "K-9" (K-9 2010 TV series).
| quotes             = Manually used to determine if quotes are used for episodes (yes) or italics for serials (no), or not to apply any formatting (-).
                       Exclusion means the formatting will be based on the value of "| type = ".
| type               = Type of story: serial, episode, episodes, story, etc.
| image              = If necessary, an image, followed by a caption.
| caption            = A caption that describes the image.
| image_size         = 
| alt                = 
| doctor             = For episodes and serials where a single actor plays the Doctor.
                       List as plain text; do not use bullets (<nowiki>*</nowiki>). Include the name of the actor and the Doctor the actor
                       portrays in the format "<actor> – <doctor>". Link to the appropriate actor and Doctor article.
| doctors            = For multi-Doctor specials, list the incumbent Doctor first, and then any
                       other Doctors in chronological order (e.g. The Five Doctors would be Fifth, First,
                       Second, Third, Fourth). For regeneration stories, list the main actor playing the Doctor before the other actor.
                       Separate entries with bullets (<nowiki>*</nowiki>).
| companion          = The Doctor's companions, ordered by order of billing in the credits, where a single actor plays the companion.
                       List as plain text; do not use bullets (<nowiki>*</nowiki>). Include the name of the actor and the name of the companion the actor
                       portrays in the format "<actor> – <companion>". Link to the appropriate actor and companion article, if they exist. 
                       Companions serve as the sidekicks to the Doctor.
| companions         = See above, for multi-companion episodes. Separate entries with bullets (<nowiki>*</nowiki>).
| cast               = For regular cast members in other show (e.g. Torchwood). Do not use together with "| doctor = ".
                       Separate entries with bullets (<nowiki>*</nowiki>). Include the name of the actor and the name of the character the guest actor
                       portrays in the format "<actor> – <character>". Link to the appropriate actor and character article, if they exist.
| guests             = For (special) [[guest star]]s, including top billing but not companions.
                       Separate entries with bullets (<nowiki>*</nowiki>). Include the name of the actor and the name of the character the guest actor
                       portrays in the format "<actor> – <character>". Link to the appropriate actor and character article, if they exist.
| director           = 
| writer             = 
| based_on           = For episodes which are based on specific source material (e.g. "The Family of Blood" is based on
                       the novel ''Human Nature'' by Paul Cornell). Use {{Based on}}.
| script_editor      = 
| producer           = 
| executive_producer = 
| composer           = Composer of the incidental music.
| production_code    = 
| series             = 
| length             = 
| missing_eps        = For missing episodes, as described in the article "Doctor Who missing episodes".
                       Format is "<total missing> episodes (<missing episode numbers>)"
| date               = For single episodes, this will take any date string, and format as a microformat-enabled
                       "DD MMMM YYYY" string, use {{Start date}}.
| started            = For serials, the date of the first episode, use {{Start date}}.
| ended              = For serials, the date of the last episode, use {{End date}}.
| preceding          = Defaults to –
| following          = Defaults to –
}}

{{Infobox Doctor Who episode
| number             = 161
| episode_name       = Dalek
| show               = DW
| type               = episode
| doctor             = [[Christopher Eccleston]] – [[Ninth Doctor]]
| companions         = 
* [[Billie Piper]] – [[Rose Tyler]]
* [[Bruno Langley]] – [[Adam Mitchell (Doctor Who)|Adam Mitchell]]
| guests             = 
* [[Corey Johnson (actor)|Corey Johnson]] – [[List of Doctor Who villains#Henry van Statten|Henry van Statten]]
* [[Anna-Louise Plowman]] – Diana Goddard
* [[Steven Beckingham]] – Polkowski
* [[Nigel Whitmey]] – Simmons
* [[John Schwab]] – Bywater
* [[Jana Carpenter]] – De Maggio
* Joe Montana – Commander
* [[Nicholas Briggs]] – Dalek voice
| director           = [[Joe Ahearne]]
| writer             = [[Rob Shearman|Robert Shearman]]
| script_editor      = [[Helen Raynor]]
| producer           = [[Phil Collinson]]
| executive_producer = [[Russell T Davies]]<br />[[Julie Gardner]]<br />[[Mal Young]]
| composer           = [[Murray Gold]]
| production_code    = 1.6
| series             = [[Doctor Who (series 1)|Series 1]]
| length             = 45 minutes
| date               = {{Start date|2005|4|30|df=y}}
| preceding          = "[[World War Three (Doctor Who)|World War Three]]"
| following          = "[[The Long Game]]"
}}