Reese Witherspoon & Jim Toth -- Back to Business After Embarrassing Arrests

Reese Witherspoon and husband Jim Toth aren't hiding in shame following their embarrassing weekend arrests ... they're facing life head-on.

Reese was all smiles today in L.A. getting out of her car ... and Jim was back to work as usual at CAA, where he's one of Hollywood's bigwig agents.

You'll recall, Reese and Jim were both arrested in Atlanta on Friday -- Jim was popped for DUI ... and Reese was busted for disorderly conduct, after getting a little too worked up in her husband's defense.

According to police, Reese told one officer, "You're about to find out who I am ... You are going to be on national news."