hospital in july because that's when the residents change. "grey's anatomy" it isn't. i was going to go in in august. and then when i had such a big may, i was either giving an award or presenting something. and i said to my cardiologist, you know, could i wait until the end of may for this because it didn't seem to look good. and he said, you can wait, but there's a small risk that you could drop dead. i said -- >> larry: let's do it tomorrow. >> exactly. i told no one until i announced it on the air. >> larry: your first show back to work, you wanted david letterman to be your guest. you swapped heart stories. let's take a look. >> let's talk the difference between yours and mine. yours were arteries. >> i had coronary artery disease, you just blew a valve.