I can't find any cite for this today, but I heard it on the news this morning, thanks to the local public radio station.
Texas has already recorded its first self-defensive handgun use of 2008. A case of road rage, apparently. When the vehicles stopped, one man attacked the other man with a baseball bat. The man being attacked shot and killed the bat-guy.
The man with the gun has a CHL, if that makes a big difference to you.
Final word: "Police determined it was self defense. No charges will be filed."
UPDATE: JR found the link.