They do other CSI themes too
"Who Are You?"
"Won't get Fooled Again."
But those were recorded in the 70s, when the Who were at the peak of their power. They still occasionally perform, they did a disappointing Super Bowl halftime just a few years ago. But they are just old farts now, like most of their fans (myself included). Still, as late 60s, British Invasion groups go, they had a great influence and left an amazing body of work.
They were the first ones to sing (in "My G-G-Generation"), "I hope I die before I get old" Two of them, Entwhistle (bass) and Moon (drums) already have.