Barack Obama is the only chance we have to take this country in the right direction. He's not perfect (I'm as upset as anyone about his vote on FISA), but on the vast majority of issues and votes, he's done the right thing. He's smart, kind, hardworking, and inspirational. He will help mend America's tattered image in the rest of the world. He opposed the war in Iraq from the beginning, and continues to push for us to reduce our presence there and focus on Afghanistan and Pakistan, where the actual threats to this country are. And what he doesn't know himself, he knows who to go to; he has a very tightly run team with a wide variety of very sharp advisors. This is only the smallest sampling of the reasons why I think it's essential that Obama be elected president; you can find plenty more written elsewhere that will go into much more detail.
In order to get Obama elected, though, everyone needs to do a little. Obama is the first candidate I have donated money to, and I encourage anyone who is able to do the same. Obama opted out of public financing to let millions of Americans donate a small amount at a time to show their support for him, while McCain is taking public money while also raising money for the Republican party who can then spend it on advertising for him and attacking Obama. Donating to Obama's campaign is very important, to make sure he can keep up the fight, so I've set up a personal fundraising page. Please donate what you can afford, be it $5, $10, or $100; every little bit helps, and you should consider it an investment in this country.
Besides donating, you should also make sure you're registered to vote, and make sure you get to the polls. Those of you who live in New Hampshire especially should look into making sure you're registered there; New Hampshire is a swing state, and leaning slightly towards McCain right now, so every vote will make a difference. For those of you who are Dartmouth students, you can register to vote there very easily; just get a note stating that you are living in New Hampshire from ORL, then go to the Hanover town clerk's office with that and a photo ID. You can find some more information here.
If you're not sure if you're registered to vote, the Obama campaign has set up a website that will allow you to check your registration status, register, and/or request an absentee ballot. It should also allow you to look up your polling location, at least in some states.
Oh, and to make this post a little more fun, and since I said I'd be trying to post the occasional juggling video here, here's a video about Barack Obama by Anthony Gatto, the world's top technical juggler and multiple world record holder.