400X300 capture at 15 FPS using fast compression. GIF created with 60% Screen size reduction at 10 FPS:
Original AVI format (divx codec required) 141kB	With effects AVI format (divx codec required) 405kB

More examples:

Desktop recording: Minesweeper GIF - 4.4MB Minesweeper AVI - 1.6MB Flash game in web-browser AVI - 1.5MB	Full Screen capture: WWII Online 1024X768 AVI - fast compression 18.0MB Silent Hunter III 800X600 AVI - fast compression 3.4MB Wolfenstein ET 800X600 AVI - fast compression 4.6MB
Toggle style captures: Boom and zoom AVI - high compression 5.4MB Fast landing AVI - fast compression 14.5MB Energy fighting AVI - fast compression 5.5MB Dewo kill AVI - fast compression 7.0MB Ship attack AVI - fast compression 975kB Ship attack with effects AVI - fast compression 3.4MB Medal of Honor AVI - fast compression 2.7MB Medal of Honor with effects AVI - fast compression 6.5MB	Hold style captures: Deflection shooting AVI - fast compression 3.3MB Flack gun AVI - fast compression 2.9MB Hanger attack with effects GIF - fast compression 916kB