I haven't seen either of these shows but I have my TiVo set for them…
On Monday, The History Channel debuts History of the Joke, a two hour special about comedy hosted by Lewis Black and featuring a whole mess of funny people including George Carlin, Robert Klein, Penn & Teller, Kathy Griffin, Shelley Berman and Dave Attell. Consult whatever you consult for the correct time.
Then on Wednesday, most PBS channels will be debuting the Great Performances presentation of Company, the musical by George Furth and Stephen Sondheim. They videotaped the recent Broadway revival and you can see a video preview — most of the opening number, in fact — over on this page.