Well here is my list:
1) Strategy Thread: I have a few favorites... the Pit vs. Granary Start threads, Dave's Shang Fast Bronze thread, and ya gotta mention wedsaz's Minoan Fastboom threads.
2) Funny Thread: The Joke thread in VVV and the wedding thread are my favorites.
3) Flaming Thread: When wedsaz asked Dave what experience he had in Math and Computer programming because he assumed Dave was stupid or something. Dave kindly told wedsaz he had more Schooling and work experience than wedsaz ever dreamed of having. That was classic! Also any thread with the word "wedsaz" in the title is a for sure hit.
4) This was a funny one by Leper. He was getting his butt kicked good and I was sitting next to him telling him what he should do etc. Well tensions were high, and he was losing. In the middle of losing all of his villagers, he chatted and said "What is going on. I have been gone to the bathroom for the last 5 minutes." That cracked me up!
Other classic chats are KGB getting booted out of games in the setting screens because host didn't know him and all of us (his so called friends) said we didn't know him and he must be a Rook. Host cancelled the game and we went back and had some more chats that were very classic.
My all time favorite though is my brother. He called himself BlitzkriegBoy. We were in a game and losing. He asked if we should resign. I said "No lets take it like men." His response was "In the ass?". That was so damn funny!
5) Funniest Thing in a Game: Cranyvillie (who is dead or something now) and I were best friends. We hadn't lost a Medit 2v2 ever and had been playing together nightly for a couple months. Well I got my butt kicked and had retreated behind him. I kept asking how we were doing and he would reply "Fine". Well I built a little econ and just tribbed. He tribbed me and told me to get Writing fast because I had to see something. I thought I would see that he had conquered both of them and had written me a message with houses or walls or something. Well I researched Writing and right when I got it I saw 40+ Hittite Heavy Cats totally surrounding me and Crank was all dead but a Market and a villager. He was defeated seconds later, and I was defeated not more than 20 seconds later.