No.
Yes- most people do consider him to be the best actor to ever play Superman. "Superman: The Movie" and "Superman II" are two of the best superhero movies to ever be made. Tom Welling has really grown into the role on "Smallville" and Tim Daly is praised by fans of "Superman: The Animated Series" for his voice acting role as Superman. However, Christopher Reeve receives the credit for being the best.
Superman? Yes. Frankenstein? Yes. Batman? No.
never ever he is too cute to be a boring superhero
No.
Yes he did, he mentioned it on your Carolina with Kimberly and Jack.
He was a good actor for the part and managed to do it for four years.
Superman and Clark Kent.
cassidy
"The Adventures of Superman" (1952-1958)
No. I cannot locate any appearance for Jack on The Tonight Show.
Henry Cavill will play Superman/ Clark Kent in the Man of Steel the 2013 Superman film
Kirk Alyn had a cameo in the 1978 film, Noel Neill and Jack Larson both had cameos in "Superman Returns", so George Reeves would probably have appeared in something for Superman as well if he had still been alive.