Currently I use a:

24'' iMac with 2.86ghz duo-core, 2gb RAM and 128mb ATI Graphics (lame specs, sweet computer).

This summer I am uprading to:

27'' iMac
2.8GHz Quad-Core Intel Core i7
8GB 1066MHz DDR3 SDRAM - 4x2GB
1TB Serial ATA Drive
and going to upgrade the standard 512mb ATI to a 1gb+ ATI.

I like Macs...what can I say?