The Australian Open finals haven't been particularly memorable for me. I didn't see the match at the time, but Chris Evert beating Martina in the 1982 finals was a great result. And the match, when I saw it years later, was thrilling. I heard the 1987 Hana-Martina final was a doozy, but I've never seen it.
As far as the worst, I don't think it could get much worse than when Henin retired in 2006, and still (?!?$&*@#!) stayed on court after the match and through the entire ceremony. (And I thought she was ill??)
The French Open finals have had their share of dramatic matches. It's tough for me to choose. But still, the best memory, and the most dramatic match of all time, is Steffi Graf's 1999 final round win over Martina Hingis. I could watch that a thousand times, and never get bored with it. Chris Evert's 1985 win over Martina Navratilova is a close second as far as thrilling and dramatic victories.
The 2009 Kuznetsova-Safina or the 2008 Ivanovic-Safina drubbings were all-time lows for women's tennis.
Wimbledon has had many memorable finals. The Evert-Goolagong 1976 final was great. So was the Graf-Sanchez final in 1995. Our Ginny's win in 1977 was very, very popular and memorable.
As close as the match was, I thought the 2005 final between Venus and Lindsay was overrated. Perhaps because I felt Lindsay found more ways to choke away a major final than I thought were possible. In my book it was a far bigger choke than Novotna's in 1993 (Jana had never won a major, so she should have been forgiven somewhat; Lindsay played the '05 final as though she wanted
to lose!) The 2007 Venus-Bartoli final was also an all-time low for women.
The women have not staged an interesting (or 3 set) US Open final since 1995, which sadly illuminates the bad state women's tennis is currently in. The 1995 final between Graf and Seles was one of the most tension filled matches I have ever witnessed. The 1985 final between Hana and Martina was one of the most invigorating and memorable women's matches I have ever seen. I wish I was able to see the 1974 final between King and Goolagong.
Unfortunately, there are too many really bad US Open finals, especially as of late. Last year's Clijsters-Zvonereva was bad; the 2007 Henin-Sveta final was horrible, as was the 2005 Clijsters-Pierce. I also felt that the two Williams sisters finals were completely devoid of real drama or quality play. And even two finals between the #1 and #2 players turned out to be duds: 1976 and 1983.
I wish the US Open could produce more memorable matches. These days, I am more relieved than disappointed that the US Open is over. It's my least favorite major to follow or watch