Amazon.com: OWC 2GB (2 x 1GB) PC5300 DDR2 667MHz SO-DIMMs Memory Compatible with MacBook/MacBook Pro, iMac, and Mac Mini Models (OWC5300DDR2S2GP) : Everything Else
KOMPUTERBAY 2GB DDR2 1066MHz PC2-8500 DDR2 1066 (240 PIN) DIMM Desktop Memory with Heatspreaders at Amazon.com
G.Skill 2GB (1GB x 2) DDR2 PC2-8500 (5-5-5-15) PK Series Dual Kit (8-layer PCB) at Amazon.com