New Music of the Day: Various demos and early drafts of Britney Spears’s comeback single “Hold It Against Me” made the rounds last week, but this morning the final, finished, simonized version leaked online. As the official release date isn’t until tomorrow, this may go away soon, so listen now (you know, if that’s, like, your thing).

BritBrit’s new studio album is due in March.

[justjared.]

Early Bird Special: Mondays suck — so here’s… whatever this is.

[reddit.]

Lights Out: A simple miscommunication leads to a sticky situation.

[thanks johney!]

Animated Short of the Day: Professional wonderer Robert Krulwich explores a mystery that has long stymied scientists: Why can’t blindfolded (or otherwise visually-hindered) humans walk in a straight line?

[mefi.]

Time-Lapse Thing of the Day: For the 2010 edition of his annual year-long time-lapse, Eirik Solheim placed his old Canon 400D on a windowsill and snapped a single pic every 30 minutes for 12 months, giving him a total of ~16,000 images to work with. He then pared down the photo count to 3,500, and strung them together to create “One year in 2 minutes.”

A complete breakdown of his process can be found here.

[eirikso.]

Earlier: 2008, 2009.

Broken English Film Summary of the Day: Via Japanarchist: “Lovely Mika tells the story of Titanic. English is not her native language.”

[iheartchaos.]