When I first watched the series all the way through, I knew Crusher was coming back, and because I liked her in season seven (when I started watching the show with friends), I just kept binding my time thinking, is she back yet? Is she back yet? Is she back yet? I know this fascination with Crusher is odd, she's certainly not my favourite character or anything. I think one of my first episodes were the Descent two-parter, and I was obsessed that the doctor was in command!
By the time I had the show on DVD, Pulaski really grew on me. She was obviously a McCoy clone to start with, but I enjoyed her dynamic with the crew. She started very abrasively with Data, but she came around. I loved her little Klingon Tea Ceremony with Worf as well.
She had great passion, and Diane Muldaur played her very well. It's obvious behind the scenes things weren't working out, but having her on for a season mixed things up nicely.