She'll be on Kimmel Thursday night (I think). Patton Oswalt has been co-hosting this week so it should be a great show
I have like 4 hours of Sarah Silverman Stuff on tape, including her infamous Conan O'Brian appearance where she got in trouble for saying "chink" (and another one before that where she said chink, but DIDN'T get in trouble).
She does her best when shes on Conan O'Brien I think. She also did a lot of great sketches on Kimmel's show when she guest-hosted.
The stuff of hers I like the least (though to be fair I've only seen little of it) is on Crank Yankers.
Don't persue her SNL sketches, she pretty much only plays "Audience Member who doesn't listen to what Host is saying asks a stupid question"
She's been on "Dinner For Five" twice. They rerun those shows a lot on IFC/Bravo (Yet I still can't get the episode with David Cross on tape). She generally doesn't say much on shows like that where there are a bunch of guests on at once, but when she does get a word in it's good. I've caught her on the Colin Quinn Show, same deal.
I suspect she'll show up on Kimmel a lot in the future, since they are dating. Also, I've heard HBO was interested in giving her a series of her own, but I forget where I heard that. I probably dreamed it
Really, as far as television goes, shes only really been on other shows. I don't know of any stand-up specials or anything like that. That's why it'd be great if she got her own show