Here you are a classy, finely shaped tab menu from Weightshift, a small studio based in San Francisco.

Though we loved this web site on the whole (the typography is great and, generally, you can catch a meticulous attention behind every detail), we liked the most the quite vertically compressed menu (since the so-called web 2.0, we usually can spot only gargantuan tabs navigation) with small rounded corner, polished by graceful overlapping circles and subdued mouse over effects.