I really like the Daypop Top 40 (for one thing, it's a lot easier to read than blogdex). From today:

Middle East Geography and History Quiz (I got 9/10).

and the Metafilter Magnificent Obsession thread. Some of note: the language construction page (I have read this extensively before, in connection with Tolkien's languages) and the guy who made a 14 ft Stegosaurus out of Legos.

(Note on usage of 'legos': I know it's cooler, and maybe even right for the plural of 'lego' to be 'lego', like some kind of system. But we didn't know that growing up and I grew up saying 'legos' and I'm going to keep it, not least of all for nostalgia's sake.)