If standing up didn't make me feel dizzy then I'd go for a walk (which tends to cure both of these problems). Instead I'm going to wean myself off of the computer and stare at a book for a bit instead.
Meantime, have the BBC Radiophonic Workshop performing the Dr Who music twice live. First time is the 1980's version, with pre-recorded backing (I think), second time is purely live. Both are good fun, if you're a massive geek. And if you aren't, then why aren't you???
(found via hirez, who linked to a whole bunch of them)