Brooklyn "power couple" Jennifer Connelly and Paul Bettany are leaving the neighborhood. Their beautiful Prospect Park West mansion (see pic, above) is on the market for $8.5m (they paid $3.5 for it back in 2003). They'll be fleeing to a fancypants penthouse in TriBeCa. So, is everyone going to just abandon Brooklyn? First it was Michelle Williams and the late Heath Ledger (though she kept their Boerum Hill brownstone, she spends most of her downtime in LA, he spent it in Manhattan), and now these well-respected "boho" "artists." Thank God we've still got Maggie Gyllenhaal, Peter Sarsgaard, and Keri Russell. And I think M.I.A. lives somewhere in Bed-Stuy. But, they'll probably leave too.