It changes daily, but today my favorite to play on acoustic is "Ain't No Sunshine".
I play on an electric exactly the same way as I play on an acoustic, but some songs just sound better amplified. I've been working on "What I Like About You" on electric, but last time I got together with friends, they stuck in "My Sherrie" lyrics and it worked great. So we had a good time playing and singing both songs at once, first one chorus and then another verse and wherever it flowed.
- Zurf