Jimmy Fallon fought back tears as he remembered Robin Williams on NBC’s The Tonight Show Tuesday. The emotional host said, “We, like all of you were shaken up a bit last night when we learned that genius comedian and actor Robin Williams passed away. He was one in a kind.” “He was one in a million.” “He’s, like, unbelievable. If you ever saw this guy’s stand-up, you wouldn’t even…if you don’t know his stand-up, you should YouTube it right now and just watch it. He’s just amazing.”Fallon then showed a clip of Williams’ first-ever Tonight Show appearance with Johnny Carson. The 39-year-old comedian concluded his touching tribute to the 63-year-old actor by standing on his desk and riffing off a key scene in Dead Poets Society: “Oh captain, my captain, you will be missed.”