The XMB has been around MUCH longer then you think. The PSP wasn't the first home of the XMB either. Also the XMB has found it's way into several home electronics.

With only a Japanese release the PSX wasn’t a major commercial success, yet it’s legacy still lives on today. Something that sill today thrives in many Sony electronics, including the PS3, Bravia HDTV’s, Receivers, and the PSP was born on the PSX. That something is the XMB.

DoucheVader via playstationlifestyle.net »