Looking for a really good level design portfolio

Hey all,

I get a lot of portfolios from level designers that quite frankly suck. Like, so unpolished that they make me sad

(note the sad face)

Was thinking it would be great that if instead of just being sad, I could give them some constructive feedback, and I would imagine the best way to do that would be showing them an uber-awesome level design portfolio that they could compare theirs against and see where they need to improve.

So, does anyone have - or has anyone recently seen - a really great portfolio of game levels? Would be super if it were some really impressive work done by a modder, student or someone just breaking into the industry, so that folks can look at it and think "I can do that!"

Thoughts? Thanks!