Descriptions by Monika Lewis.  There are introductions to the companions and other main characters when they first encountered the Doctor, some in-universe and other descriptions of the stories they appeared in and the actors who played them.  I've also written reviews of some of the Doctor Who episodes, as well as some of the productions that actors from the series have appeared in.  Doctor Who episode reviews may contain plot or ending details, so it's best to watch the episode before reading.  I've seen most of the episodes of Doctor Who since 1963, and I'm reviewing the most recent shows and the ones that I've rewatched recently.  Other non-Doctor Who reviews are fairly spoiler-free.

Doctor Who belongs to the BBC, I don't own it.  Thanks to Russell T. Davies, Julie Gardner and Phil Collinson for bringing back Doctor Who in 2005, Sidney Newman and Donald Wilson for creating the show, Verity Lambert for bringing it to the screen as the first producer, and David Tennant and all the cast and crew who have created the program for 45 years.