Blogger seems to be having a problem today; I am not able to access most of the blogspot.com sites I visit regularly, though my own blog and Blogger tools come up fine. Blogger's not showing any problems on the status page, but the forums indicate others are having the same problem. I hope it gets fixed soon!
(Edit: Hey! Looks like I fixed the problem just by posting about it! Everything's loading fine now. Go figure.)
(Edit2: Or not? Now my own blog won't load. *sigh* Maybe it's just me.)