The Democratic primaries just ended last night (June 3) and Barack Obama is the party's presumptive nominee--like how John McCain is the presumptive nominee for the Republican party. However, there's still the Democratic National Convention in late August and the Republican National Convention in early September before Obama and McCain's respective nominations are official.
As for Hillary Clinton, she has expressed interest in being Obama's vice president, but who knows what'll happen in the next two months? News people say that Obama and Clinton will meet in the next week, and when that happens, there will be an Announcement.
Back to last night, though: the three candidates each made speeches. Links below (Warning: Each speech is ~20-35 min. long):
McCain's Speech from Kenner, LA*
*Re-linked because the other video ended at CNN's cut to Hillary coverage when McCain's speech still had 15 minutes to go. I'll re-link again if I can find an uninterrupted version.
Hillary's Speech from New York City, NY
Obama's Speech from St. Paul, MN
Thoughts? Comments? Endorsements?
[Edited to fix McCain video links]