[SkyDancer]

Yeah, I have or had a link to a website that had hundreds of planes flying. You could filter which corridor you wanted.

[TheCipher]

Here are a few good ones:

Flight Aware

Live ATC

[GOYAKLA]

May I add my $0.02 to this.
http://www.wolframalpha.com/examples/FlightData.html

If you go to this link you can get much Flight data also you may want to look at the Main/Home site! My Freeper(M1-A2) son/Nerd uses this for many situations and questions.
http://www.wolframalpha.com/