Playlist: Big Red parody; an ad featuring Kevin Sussman (pre-Big Bang Theory); pony; Mother's Day; facebook & twitter; Twilight parody; first day of school; 5 Dead zone ads; Christmas (Island of Misfit Toys); Tough Call (R2-D2); 5 Suzie's lemonade ads; Christmas (Mom Take 2); a better network as explained by Star Wars; a better network as explained by 30 Rock ("Backdoor Brag" and "Audition"); a few ads featuring Thomas Middleditch (there are a ton of those, but I think the best ones tend to also feature his friend Joy, played by Britt Lower; the ones I include here are "Horse", "Departures", and "Best".)
Then a couple of ads I couldn't find on YouTube, just iSpot. First a father & son graduation ad, then another Thomas & Joy ad (this one for Christmas).