Meh. Too practical. Get yourself an 8-track instead.

Literal LOL. I wonder, though: Would your past self struggle against something being shoved in the "out door", or would he just let it happen because it was a future version of himself doing the shoving? XD

I'd go back in time to make it to classes at school that I couldn't fit on a normal schedule because they overlap each other.

Oh, wait...

I would go to my past self when I posted what I said so at least I would not be surprised and agree to get it over with.

I would go back in time and ask my wife to marry me the day before we got married since I never technically asked her.

I've often thought about how awesome it must be to go back in time with the knowledge that I have now. I would've given my highschool teachers so much crap :D
However, even if actually given the chance, I would never do it, ever... I think that the version of life/reality/whatever that we are living is extremely unstable. I mean that the small changes that you would effect on the world if you were to go back in time to your youth, would most likely result in a lot of people never coming into existence. Most likely, none of the people that you know that were born, say one year, after the point that you are returning to, would come to exist. I wouldn't be able to live with myself :P
What we need is a universe like the one with that guy that uses his TV remote thing to jump through parallel dimensions.

Man, look at all these lame (and not so lame) uses for a time machine... and yet, not a one of you said you'd even bother to show up at <span class="bold">Stephen Hawking's party</span>.

This is why we can't have nice things.

Read it again. Tallima said he'd snub the party on purpose. That's like rubbing salt on a big ol' wibbly-wobbly wound.

It's ambiguous. But I think he meant actually visiting the party would be a lame use. So he would do the not lame thing and snub it.

It depends on which you think is lame..

Sleep as long as you want, then travel back in time so you never miss something.

I'd never get done sleeping. heh

Get dat gramaphone son

...to synchronize with people around the world.
Poster A: Super awesome holiday is today!

Poster B: Damn, it's tomorrow. <uses time machine to fast forward to Super awesome holiday>

Lemme innaduce you to mah printin press; s'got moveable type, yo.