This thread is my favorite. It didn't help my poker game much, but it got me hooked on the 2+2 forums.
sup bro?
And here is a thread started by fimbulwinter shortly after Party changed from 50bb max buy-in NL cash games to 100bb max buy-in NL cash games. I always liked this one.
Deep Stacks, Implied Odds, Preflop Play and The State of SSNL
And here is another good one started by Pokey.
An Unbelievably Long Guide to Hand-Reading.