Along the same lines as the Wii Sports: Guitar Hero vs a real guitar.

My daughter was trying to play Guitar Hero at one of those store displays in Best Buy one day and my husband, who was in several bands when he was younger and has taught her to play some on her own baby Martin (purchased for her last summer by my father, the blues musician) and her own electric guitar (bought by dad), was laughing. "Why would you want to play this when you could go home and play the real thing?" She was bored with the game in minutes, but the two of them play music together for an hour or more several times a week.

Roxy