I have iMac G5 with 20" display - love it. I see that the minimum requirement for Snow Leopard is an Intel Core Duo processor - not sure what kind of processor I have but I'm sure hoping I don't have to buy a new computer to get Snow Leopard!! About this Mac menu says "Processor=1.8GHz PowerPC G5" so I am assuming it is NOT an Intel processor - correct?
You can get along perfectly well with Leopard, but unfortunately, all the coming OSs will only be intel compatible. I don't think that Snow Leopard is going to be a huge advancement over Leopard, so don't feel too left out
All processors starting with a 'G' are made by IBM (OS8 to OS10.5.x) All processors starting with 'MC68xxx' are made by Motorola (OS so old now not in use) Most processors with the words- solo, duo or quad are made by Intel (OS10.4.x to ?)