In case you don't have any good midi to show off the GS/XG drum sets and
sound effects, here are some that you can try out.  Many of these midi will
sound very strange without the correct drum sets and sound effects, so they
are good for comparing TiMidity to real MIDI cards and other soft synths.

ambient		XG drumset 16, 25
animat1		XG sound effects, fireworks
atlantxg	XG SysEx Multi Part parameter changes, sfx
bullet		XG horse galloping, other sfx, drumset 25
cafejung	XG drumset 16, drums in general
celtic		XG drumset 48, snare roll
cps		XG drumset 25
demo0001	run TiMidity in ncurses trace mode, shows neat GSLCD anim
drumzxg		no special drumsets, but very impressive XG percussion demo
energypl	XG drumset 16, 25
garden		XG sound effects
gloria88	GS drumset 50
haunted		XG sound effects
lont32		nothing really fancy, but it's a 32 channel midi
mystery		GS SysEx bank+program changes
sealife		XG sound effects
seascape	XG sound effects
t7g0006		GS sound effects drumset 56, drumset 48
t7gtitle	GS mixed drumset 127, drumset 48

I have several midi that show off drumset 49, but none are all that good.
Just take my word that the mapping is quite satisfactory.

-Eric
