These probably don't merit individual link posts, but they're worth a look:

Am I in pi?: enter your date of birth and it tells you where (if at all) the digits appear in pi. Mine starts at the 72,408th digit.

The Plus Deck Cassette Converter is a cassette deck that fits in a spare 5.25" bay in your PC. Edit tapes, convert to MP3.

Things my boyfriend says is quite amusing. "You shouldn't buy me things. Save your money for unicorn rides or whatever it is girls spend money on."

The web site of the Fertnel Snak Food Corporation. As well as browsing the site, read the page source code.

I'm not entirely sure about PETSorFOOD.com. I bet PETA hate it, which is almost enough recommendation, but the humour is a bit too blunt instrument for me.

This one is definitely good. The Dyson (yes, the vacuum cleaner people) Telescope Game. Because we all have time to waste.