if you use a PPC as your main computer now, you need to get yourself into a apple store this year, i cant speak for the G5, but my ibook is a dog that needs to be buried/ recycled, or sold to someone to dumb to know the difference. the youngest PPC will be 3 in august. i dont want apple to keep compiling code for two proccesors, they can use that manpower on somthing more useful.
Actually I disagree. No, don't go to an Apple Store.
First of all take your OLD and OBSOLETE G4 Mac and secure your personal data. Then go back to Tiger or (if you have a copy around) Panther.
Get yourself some copies of old versions of your beloved software, which you really really liked. (e.g. Quicktime 5 was so much better than 6 in function but misses mp4) Guess what, iLife 05 or 06 still works on that machine. As do other nice Apps. Toast 6 Titanium is fine and dandy, I still don't get why people upgraded to 7, let alone 8 or 9.
Oh, and don't forget to take you OLD and OBSOLETE G4 to some of your friends and show them how much fun it is to cut and edit stuff in Quicktime with little hassle.
Btw: Don't forget to show your good old Leopard Intel Mac buddies some stuff, they have never seen before, like categorized Spotlight, a working Mail App and so on.
Sorry, I just had to rant, as all 'new Apple stuff' is getting out of control. iTunes has just become a bloated POS, some people still prefer iMovie 06, iPhoto - nah, don't get me started on that.
And as a matter of fact I can assure you that there is barely something in the software these days, you couldn't achieve with software from 2-3 years ago. Guess why so many people still are on CS 2. If it wasn't for going Universal, some of them would never have upgraded.
So, well, basically I still wait for the Nehalem MBP. Maybe then I will think otherwise, but my current position is, that there is little to no new function in current Apple software, that's worth consuming all this computing power. Yes, you guessed right, I'd rather be wowed by great Apple hardware again than follow a stupid keynote about 'Places' and 'Spaces'.