maybe "angel song" from Great White, or "don't know what you got (till it's gone)" from Cinderella
There's a lot of hit songs that have been simplified into "easy" piano versions, so I'd just search whatever artist/band you please + easy piano and you should plenty of stuff.
Late reply, but it seems this forum doesn't get a whole lot of action anyway.

I don't know what you're into. That being said, "Imagine" by John Lennon is an incredibly easy peice to learn, and is instantly recognizable.
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