Kohli-Riba for me of course! But for all people the 2nd Round looks really good. I also would like to see Raonic vs Petzschner. Haas vs. Nadal will be intresting too, because Haas will make a huge fight in his probraly last Australian Open..
Of course Wawrinka-Baggy and Isner-Nalby are highlights too!
Roddick vs Hewitt will be good, just like Tomic vs Querrey and Baghdatis - Wawrinka. Isner vs Nalbandian will be good, if David is fit. Almagro - Dimitrov could be good, battle of one-handed backhands. Maybe Simon vs Benneteau and Tipsarevic vs Duckworth will be nice to watch. Unfortunately Nadal vs Haas will be one-sided.
Top one by "weight" is Roddick vs Hewitt for sure (Haas didn't accomplish all that like this guys). But the best match by quality will be Baghdatis vs Wawrinka. Would be Hewitt's match but I am afraid he is not fit enough for best of 5.
I like the Baghdatis vs Wawrinka matchup because they are both players that have been around for a while but haven't really bumped into each other in the draws. They met once in 2008 in Indian Wells (Wawrinka won 6-3, 6-7, 6-0), but this was the year Wawrinkas rank shot way up, even into the top 10 while Baghdatis fell way down because of injury. Maybe not the ideal time for this matchup but hopefully both can play in good form.
I actually doubt that I will see the Baghdatis vs Wawrinka match actually, mostly because of the time delay. Don't think I'll have enough energy to wake up early and watch that one. I'll probably watch Fish vs Falla out of todays matches, but I may catch bits of other matches. That's the major thing I don't like about the AO, this damn time difference.