bang-up 
adjective North American informal
Excellent: for a novice, he has done a bang-up job...
- And they're doing a bang-up job: Corporations are currently turning over 30 percent less of their profits to the taxman than they did 20 years ago.
- Instead he's given the keys to newcomer Stephanie Dupont, and while she's still getting the hang of the whole blogging thing, I can safely say she's doing a bang-up job.
- I didn't enter anything this week, and Inscrutable American did a bang-up job in presenting the entries.