Here are some ideas:
1) A 'fold' tag for html so that you could use the web just like a newspaper. Or the back page of Mad magazine.
2) Round windows. I proposed this years ago, but Noah poo-poo'ed it (he must have thought it was his bed! Snap!) It's genius, though. Think about it - would kids go nuts for round IM windows? Or, like, heart shaped?
Finally, here's something no-one's ever said:
"There's a party in my pants, and everyone's e-vited."
You know, if I'd come up with this shit in 1998 I'd own the Mavericks.