Yep, definitely Summerslam! that TLC match and Benoit/Y2J was freaking amazing! (Y)(Y)(Y)SummerSlam. Top to bottom, just an excellent show. I'd rate it the best SummerSlam ever.
The main event of Rock/HHH/Angle was very entertaining and did a phenomenal job weaving in the HHH/Angle/Stephanie love triangle. Undertaker and Kane had a massive brawl. Jericho and Benoit had a 2 out of 3 falls match that I consider one of the under-appreciated matches of the Attitude Era. Oh, and there was also the original TLC match, which you might recall as the Match of the Year.