LOL, great thread. Brings back memories. There are so many great things about MITM, but one that's fresh in my mind cause I was just talking to Tony about it today is from Jessica Stays Over. It's when Reese comes out of the crate after he thinks he's been shipped to China and Jessica's Asian boyfriend, Mike, is standing there. Reese comes out of the crate and says he's going to kick Mike's butt and Mike says "Hey, quit it" (in English, obviously), then Reese says "I don't speak Chinese, jackass!" That scene makes me laugh out loud every time.
Another scene I really like is from If Boys were Girls when Reese is about to beat up the old lady in the dressing room who had Malcolm pinned to the wall with her walker. And the one from Reese vs. Stevie when Reese is upset cause Malcolm will be leaving for college soon. I love all those little moments when the boys take of for each other or show that they care about each other in some way.