Has a demo ever sold you on a game?

[the-pi-guy]

Most of the enjoyable demos I played were of games I was going to get anyway, with the exception of one game coming to mind. 
Batman: AA, really enjoyed the demo and the game itself is great, really my first major exposure to Batman, so I watched and enjoyed the films too. 

[Legend]

Yes.

Heavy Rain, God of War,

[7H3]

most recently starcraft 2, and DOA5

[Max King of the Wild]

Uncharted.

[BasilZero]

Yes. Bravely Default.

Although the final product/actual game was a bit different.

The demo was a bit misleading but the core gameplay mechanics (leveling up system and battle mechanics) were the same however the NPC interaction/side quests were not the same.

[Dr. Pezus]

Yes, FIFA games. Also Uncharted and Batman and many others I guess.

[Legend]

[Dr. Pezus]

Oh yeah, the Dead Rising demo was pretty dang good.

[BasilZero]

I remember playing the God of War demo long time ago - it is what got me into the series!

[Riderz1337]

Just Cause 2 demo. I spent more time on the demo of that game than I have on most games I've spent 60$ on.