I only know a few...so here my favorite one............
A guy 'lucks up' on a ticket to the Super Bowl. Even though its in the 'nose bleed' section he could'nt be happier. So he goes to the game, finds his seat whips out his binoculars and proceeds to watch the game. After a awhile he notices an empty aisle seat on the fifty yard line 2 rows back. In the seat next to it sits an old man. He watches for a minute and it seems that no one is sitting there. So he makes his way down and approachs the old man and says "Excuse me Sir is anyone sitting here? " The old man replies "No it was my wifes. We've been coming to the Super Bowl together for 20 years but she died." The kid says " Oh, I'm terribly sorry, Sir, but could'nt you get a friend or anyone to come to the game with you?" The old replied " No son, they're all at the bit*hes funeral!"