So was his schtick all a phoney?
I saw an old movie called, I think, Fire Down Below with Robert Mitchum and Rita Hayworth, plus Bernard 'M' Lee in a character role.
There's a young sailor, all fresh faced. Looks like Lemmon, except he can't be - he doesn't have the nebbish, hestitating, groping for the right word schtick he has in his famous movies, that distinctive voice.
But it is Lemmon. Talking blandly, normally. So did he put on that voice and manner for his comedy roles and then just stick with it, cos it made him a star?