Recently watched Crazy, Stupid, Love. Thoroughly enjoyed it. The central theme did seem like a sophisticated version of Hitch but the twists, dialogue, acting and - ultimately - plotline were far superior.
The comedic elements were, for the most part, a lot funnier than films billed as 'pure' comedies - i.e. Horrible Bosses - with the plot executed in a more unique manner and without the reliance on lazy, overused, jokes. The combination of the improv'ed dialogue and the genuinely emotional moments only enhanced the comedy.
If I had any criticisms, it would probably be that some parts of the film were far too surreal and unbelievable when they really didn't need to be to secure laughs. Also, Gosling was a bit 'cardboard cut-out' in his acting.