I could not find the full episode online either, but while Googling for images, all I could find was the one on this website, with some info on the episode as well as four other Thanksgiving episodes of other TV shows. FYI, I've never seen the "Cheers" Thanksgiving episode in which we sort of see Norm's wife Vera for the first and only time. Read the link above for more information.
And since I have three of the 10 seasons of "Friends" on DVD, I pulled them out to watch the Thanksgiving episodes. The episodes in question are those from Season One: "The One Where Underdog Gets Away;" the one from Season Four, "The One With Chandler in a Box"; and Season Seven, "The One Where Chandler Doesn't Like Dogs." Last month, I rented Season Eight to see the one and only "Friends" Halloween episode, and as such Saw that season's Thanksgiving episode in late October, "The One With the Rumor." "Friends" had a Thanksgiving episode every season except the second one.
Other getting in on turkey talk for this week's assignment include so far:
Nerd Out With Me also looks at his favorite Thanksgiving shows
Goodwill Hunting for Geeks looks at Thanksgiving books.
D.I. Treasures has a very Mr. Bean Thanksgiving.
Diary of a Dorkette has her own Turkey Day presentation.
Retro Robot Review has a very MST3K Thanksgiving.