Just a small note... PowerPCs are not
THAT old. At least the G5 models aren't.
First Power Mac G5 was in June 2003, and iMac G5 August 2004. Last models came out in late 2005.
That might be a super long time ago for some of you, but they shipped with OS X 10.2, and the last Power Mac even Tiger. By late 2003, nothing was being shipped with OS 9 or earlier.
For those of you coming from Windows... XP was introduced late 2001. Vista in 2007. This is the timeline of OS X:
http://en.wikipedia.org/wiki/History_of_OS_X#Version_10.0:_.22Cheetah.22
When I got my MacBook Pro (Core 2 Duo), it came with Tiger. That was late 2006. Leopard didn't come out until October 2007. and the last stable release of that was in August 2009. So only three years ago.
And if you had an extended AppleCare coverage in 2005, it would have ended in 2008.
YouTube launched in November 2005 by the way... Just to throw that in there.