It was definitely significant.
Tipsarevic/Ferrer was a cracker as well, although less significant on the tournament.
Klizan/Tsonga was one that stood out for me as well.
I loved the Tipsarevic/Ferrer match - really tense stuff in the fifth set, especially with it ending on a tie-break. Nice contrast of styles in that match - great shotmaking from Tipsarevic and brilliant defence from Ferrer. I think after the Andy/Djokovic final, this would be the match of the tournament for me.
The Tsonga match was good - great to see Klizan play so well but was a bit bemused with how badly Jo was playing. Perhaps his knee had still not healed properly from the fire hydrant accident.
Sadly I didn't stay up to watch Berdych/Federer but am sure that one would have been great to watch. I usually try and watch Berdych's matches against the top players as there's always a chance that he'll score an upset win. He really pushed Rafa at the Australian Open too. Delpo/Djokovic is another one which I didn't see but sounds like it was a good match.
I really enjoyed Laura's matches against Clijsters and Li Na - it really felt like this was her breakout tournament, similar to Andy's Wimbledon 2005. And Serena/Azarenka was great - though did feel sorry for Vika when she wasn't able to serve the match out - it would have been such a big win for her.