While it's promoted as the 25th Anniversary of WrestleMania, it's actually the 24th anniversary. It's the 25th edition, but not 25th anniversary which is still until 2010 since WrestleMania started in 1985.
After Shawn Michaels kicks out of the Undertaker's Chokeslam Jim Ross Calls the choke slam a clothesline.
When John Cena started running down the runway between the two lines of John Cena clones, the first one on the left stopped his "you can't see me" gesture before he was out of the camera's sight.