Glenn Miller is completely underrated. Granted, the most well known Glenn Miller tracks are pretty lackluster when it comes to danceability and excitement:
However, there are tons of Glenn Miller tracks that are outstanding, including a version of In The Mood that is pretty badass. The secret to finding great Glenn Miller tracks is to look for his live recordings.
Glenn Miller from the move Orchestra Wives, performing Bugle Call Rag
There are several CDs out there that are from college tours or radio broadcasts that contain music that is played just for College Students. These songs RIP!
There is also a great CD (possibly out of print) called Spirit Is Willing, that has some kickass faster tunes
And even a few other songs make my list from various albums in the Glenn Miller library
Hopefully Glenn will start getting a better rep, because with a little bit of work, you can find tracks that rival the best of Artie, Basie, Goodman and even Ellington.