@ orange,
Yeah the A600's small size is cool but the reasons I towered mine are as follows:
Originally intended to towerise my A500+ (only have a motherboard), but it wouldn't fit inside the cheap midi tower that I bought - so in went my spare A600.
The A600 would then become my classic gaming rig - all in one neat package (no power brick cluttering up the place).
The tower houses my rom switcher, PS2 mouse & keyboard adapter, two floppy drives, cdrom and 3.5" hardddisk.
The tower is all black with matching wireless keyboard and wired (soon to be wireless) optical mouse.
The tower will also house a scart socket and 15-pin VGA connector for hooking up to a TFT TV.
The tower also has a neat blue LED readout for temperature, time, and fan speed (not particularly necessary but nice all the same). :-)
Edit: - just had another look at my PC's tower and it's not an Antec at all - it's a Chieftec Dragon DX-01 (black). It's very well made, solid, roomy and good looking. In short, a good (and cheaper) alternative to Collermaster and Thermaltake.