Who Are You, Won't Get Fooled Again and Baba O'Riley. Behind Blue Eyes is also relatively famous as Limp Bizkit covered the song (not very well though). There are other songs of The Who however that one has to hear in order to fully appreciate how badass this band was. I have listed a few of them below.
The Who - Love Reign O'er Me
Roger Daltrey shouting in this song is incredible. Love It. Now go to the DVD store and rent a movie called Reign Over Me with Adam Sandler and Don Cheadle. This movie is not only brilliant but the soundtrack is excellent.
The Who - The Seeker
The Who - Eminence Front
The above examples just show The Who's versatility. They have brilliant lyrics, funky riffs, unbelievable drumming...You get it. I like these guys.
The Who - My Generation
In this performance of My Generation, The Who destroyed their instruments at the conclusion of their performance, with the usual addition of mild explosives for light pyrotechnic effect. Prior to the taping, however, a "sloppy" stage hand, at the request of drummer Keith Moon (who allegedly bribed him with a bottle of whiskey), had overloaded Moon's bass drum with gun powder. When Moon detonated it, the explosion was so intense that a piece of cymbal shrapnel cut into Moon's arm; Moon is heard moaning in pain toward the end of the piece. Pete Townshend, the lead guitarist, who had been in front of Moon's drums at the time, had his hair singed by the blast; he is seen putting out sparks in his hair before finishing the sketch. Allegedly, the blast contributed heavily to Townshend's long-term hearing loss.