I really enjoyed the episode as well. I sat down with the wife to watch it expecting to have a good time despite suspicions that it was going to be another of Wizards' soulless marketing propaganda sessions, and I was surprised and pleased that all of the books and materials featuring in the episode were not even from D&D4!
I thought it was great that the episode was decidedly about the people playing and not about the game, which is how all roleplaying should be.
Also, I wish any of my sessions were ever half that engaging. :\
Speaking of D&D on televison, something that may have escaped most readers' notice is that Leo, the personal assistant to the main character of USA's Fairly Legal, is characterized in the pilot as being a fantasy gamer. At one point he finagles evidence from a police officer, a D&D buddy, by trading him Magic cards.
Again, the important thing about the character is less that he is surrounded by accurate depictions of the hobby and more that he is shown to be a capable and productive member of society despite (or perhaps because of) his habits, and that his boss (who just happens to be a very attractive woman) obviously loves and respects him a great deal.
...Although she does destroy his collector's Buffy the Vampire Slayer watch in the first episode.