I just read on pgatour and Tiger mentioned that he has never hit it so long. I think he is average at 315yards now...freaky stuff. But when you see how hard he hits at the ball, you can kinda understand. Naturally if a normal person tries to swing like that they would most likely slip a disc and wont be able to play for a while.

Here are my average yardages. Not extremely long but does the job and gives me chances to reach par 5s in two in general:
Driver 275
3W 250
3I 220
4I 210
5I 195
6I 185
7I 175
8I 165
9I 150
48W 135
52W 115
56W 100
60W 80