A pre-1970 BMW motorcycle at idle.
A radial engine at any speed but full-honk is best.
A P-51 Mustang with it's ears pinned back.
Anything by Mozart.
Tom Scholz' (Boston) guitar work.
Harry James' trumpet.
Tommy Dorsey's trombone.
Artie Shaw's clarinet.
Itzhak (sp?) Perlman's violin.
Military jets at air shows. The B-1, F-15 and F-4 are most notable.
My wife singing in the shower. (Might just be the best)
My kids laughing.
A V-12 at any speed.

I'll probably think of more but that's enough for now.

__________________
1983 M-B 240D-Gone too.
1976 M-B 300D-Departed.

"Good" is the worst enemy of "Great".