Couple more flash games to waste time with

[Choochoojr]

Hold your mouse down on the red square and try to avoid the blue blocks for as long as possible
http://uk.download.yahoo.com/ne/fu/dodge.html

Gridlock
http://www.corwin.ca/gridlock/

Blob
http://www.bbc.co.uk/bbcthree/blobs/blobmate/

Interactive music video
http://streams.omroep.nl/nps/dekortefilm/mixedup/flow/flow.html

Alot of stuff here
http://www.fetchfido.co.uk/games/menu/games_menu.htm