Oh man, airplanes are my passion
Hence the username.
My personal favorites (I'm more into civilian airplanes and airliners myself)-
Boeing 747-400. Just because it's the 747.
Boeing 767-300. It just looks good.
Boeing 777-200. Quite possibly the most menacing airliner there is
Airbus A330-200. It's a graceful airplane.
Bombardier Global Express. The best business jet out there.
And of course, my very favorite of all time. Concorde, the true queen of the skies.
Ok, I'll stop now
It's nice to see a topic about airplanes here on SF.
EDIT- wow, sorry about the huge file sizes. Thanks Wikipedia. My Google image search is deciding not to work today.