I'll always remember Katharine Hepburn as the determined old lady who was a match for John Wayne in "Rooster Cogburn" - the first film I ever saw her in. But I really became a big fan after seeing her in "The Philadelphia Story" some time later.
When I lived in Connecticut in the early '90s, I worked for a weekly newspaper in Old Saybrook where Hepburn lived. I never saw her there, but I talked to townsfolk who would tell stories of running into her in the local grocery stores on ocassion. That was enough to give me a slight feeling of connection with her and made me even more of a fan later on.
The only movie of hers that I have in my video collection right now is "The African Queen," so I will need to remedy that situation. Maybe they will come out with a nice collectors set on DVD soon.