30 to 60 fps is a huge deal. Try playing a 30fps game for a bit, then move up to a similar 60fps game. Play it for a while and go back to 30fps and you'll be astounded at how "jerky" a 30fps game looks in comparison. After playing racing games at a clean 60fps, I'll never again play another 30fps racing-type game. I'm not a huge console sports gaming fan, but I assure you that if you played madden or all pro 2008 in 60 and then went back to 30, the difference would be quite noticeable.
I hate trolls.
Systems I currently own: 360, PS3, Wii, DS Lite (2)
Systems I've owned: PS2, PS1, Dreamcast, Saturn, 3DO, Genesis, Gamecube, N64, SNES, NES, GBA, GB, C64, Amiga, Atari 2600 and 5200, Sega Game Gear, Vectrex, Intellivision, Pong. Yes, Pong.