This isn't a solid design (obviously), but I'd like to think the names of the days would be highlighted well. The week day names do line up in a column still. The weekends, especially, would be colored differently.

The weekends kind of count as an scheduled event on their own, but having "THE WEEKEND!!!!" typed out every 7 days might get distracting/annoying.

PS If you like this, follow http://twitter.com/ImSoOCD so I don't spam HN with every little thing I think up. It's only one update a week.