I got an eMac and have loved the experience thus far, all with only 512Mb or RAM, though I want to max that out so I can store more on my RAM drive, which I use A LOT!
My only resentment thus far is that my high quality videos and Youtube ALL play in slow motion, also I've noticed that some videos loose sync, where they do not on my, 1.6Ghz Netobook, 2.8 Ghz AMD system, or even my classic XBOX using XBOX Media Center.
As for Joystick support, eUAE is one of those few programs that seem to support it directly, and yes as stated above, you can remap your joystick buttons to Keyboard buttons via Poseidon, but thus far I'm having trouble finding documentation that tells me exactly how to go about this.
@Piru Where is this eye candy you speak about that I can't use on my eMac?
Also since the eMac uses shared RAM for it's video RAM, why can't the RAM just be allocated to the Fast RAM under MorphOS instead, leaving more GFX RAM free?