From damaged Paul on "Dexter" to villainous Lucifer on "Supernatural" to vampire-mob boss Bishop on "Being Human," to his current role as the sinister Dr. Jedikiah Price on "The Tomorrow People" and upcoming turns as antagonists in feature films "We Gotta Get Out of This Place" and "The Trials of Cate McCall," actor Mark Pellegrino has forged an impressive career out of playing bad boys.

Don't let the roles fool you. When the cameras are off, actor Mark Pellegrino is the ultimate good guy.

But when Download.com caught up with the actor, in between shooting "The Tomorrow People," we discovered that when the cameras aren't rolling, he's just a nice, mellow family guy, who draws, practices French, and loves a game of chess and checkers. Pellegrino has a favorite app for each of his pastimes and he was only too happy to share them with us.

Sell us on your top five apps. I'm a terrible salesman, FYI. I did telephone sales a few times in my life, trying to make rent. I sold magazines and tried to sell equipment to golf courses that actually wanted the equipment and I still couldn't sell them. I don't know if I'm the best person to ask about selling.

OK, fair enough. Then just tell us.

Draw.To My wife is huge into Draw.To, so she got me into it because it's a way of connecting with e... [Read more]

This Web version of a paper by J. Funke and J. Millson, "The Geometric Theta Correspondence for Hilbert Modular Surfaces," uses MathML to show equations and other mathematical expressions. It's shown here rendered using the MathJax software for bringing MathML to browsers that don't support it natively.

MathML, a years-old technology for displaying mathematical equations and formulas on the Web that has strong advocates at scholars and researchers, stands at a crossroads.

Firefox and Safari support it, but Internet Explorer does not. Google could help tip the balance in favor of MathML, but it's concluded the technology isn't justified. It's supporting a workaround called MathJax that instead uses JavaScript, the Web's programming language, but the company's position has displeased some who want mathematics to be a native citizen of the Web, not a slower-performing outsider.

Google -- a company with a research culture of its own -- didn't come to its decision lightly. It rejected MathML because of concerns involving security, performance, and low usage on the Internet.

MathJax is JavaScript software that can bring MathML support to browsers that don't have it built in.

"MathML is not something that we want at this time,... [Read more]