Tuesday roundabout

The geometry of sin: Zoe Brain has an angle on it.

Republicans and stem cell research: Chris Muir sees a link.

Hill and Bill: The Wonder Years - photo available here.

Pootergeek picks up on a snippet from the NUT conference.

Spiral thingy lightning bolt! Arnold Zwicky explains it at Language Log.

And finally,

Are you having problems with purple energy? Or perhaps your energy isn't purple enough. Whichever it is, Depleted Cranium has the product for you.