Hey Mary,
I am a HUGE Turtle Talk with Crush fan too! Its a must do for me at Epcot even when I'm not traveling with my little guys. I always get a big kick out of it!
Monsters, Inc. Laugh Floor located near Buzz Lightyear's Space Ranger Spin in Tomorrowland in the Magic Kingdom is somewhat similar. It is a kid-focused comedy show hosted by a digital Mike Wazowski.
In this show, he and his monster pals are trying to power up the city of Monstropolis with laughter. During the show, unsuspecting Guests may become part of the show. Its really funny to see the expression on people's faces when they see themselves appear on the screen.
Guests are also invited to text their favorite joke while you in the pre-show area and it could end up as part of the show (standard text messaging fees do apply). I still remember one from our last visit: Q. How does Lady Gaga like her meat cooked? A. Raw, raw, raw, raw, raw. (Yea, I know - its bad).
While Turtle Talk with Crush is my favorite of the two (probably because I use the word "dude" all the time too), the Monsters, Inc. Laugh Floor is certainly worth a visit.
Wishing you many magical memories :-) Allison