Windows 8 Keys

Windows 8 Release Preview Universal Product key:

TK8TP-9JN6P-7X7WW-RFFTV-B7QPF

If you want to enable Windows 8 Media Center use the below product key:

MBFBV-W3DP2-2MVKN-PJCQD-KKTF7 

Some more product keys:

Windows 8 Professional Edition Key :

XKY4K-2NRWR-8F6P2-448RF-CRYQH
Windows 8 Release Preview Key:

TK8TP-9JN6P-7X7WW-RFFTV-B7QPF
Windows 8 Consumer Preview Key:

DNJXJ-7XBW8-2378T-X22TX-BKG7J 
Windows 8 Developers Preview Product key:6RH4V-HNTWC-JQKG8-RFR3R-36498
Windows Server 8 Developers Version Key:

4Y8N3-H7MMW-C76VJ-YD3XV-MBDKV
6RH4V-HNTWC-JQKG8-RFR3R-36498

4Y8N3-H7MMW-C76VJ-YD3XV-MBDKV

MBFBV-W3DP2-2MVKN-PJCQD-KKTF7

28VNV-HF42G-K2WM9-JXRJQ-2WBQW

NF32V-Q9P3W-7DR7Y-JGWRW-JFCK8