Writing for Grantland, Michael Schur's beautify summaries why Harold Ramis is the greatest.
That there was no need to strain and mug and beg for laughs like Daffy Duck, heaving at the end of a furious tap dance routine, arms splayed, begging for audience approval. Ramis never tap-danced. He presented his case, joyfully, confidently, a world-class funny Normal Person director and actor and writer: Here, everyone, I made this, I think it’s funny, hope you like it.
Also see "A Prayer for Harold-Raimis"