Earlier tonight I watched a Family Guy episode that had a brief scene featuring The Thing. I've watched most seasons of the cartoon but must have forgotten about this episode, which was in season 5.
Peter befriends Bill Clinton and they have some good times before Lois succumbs to Clinton's charms and sleeps with him. Peter finds out and is devastated. Lois considers herself the worst wife since Lorena Bobbitt married The Thing and cut off his you know what. It then flashes to a scene where a panicked Thing looks for his dismembered member. Some random dude returns it to him.
There was also a Simpsons episode where Thing fought the Hulk as part of a St. Patrick's day brawl between Irish and North Irish factions.
Plus the time Stan Lee crammed a Thing action figure into a Batmoblie.