It's a classic panel and if you're a fan of Chris Sim's Invincible Super-Blog then you'll see it everytime you visit and see one of the greatest blog banners ever created. There's so much that's fantastic about this panel, the shock on the polar bear's face (mirroring the audience's shock), the dynamic punch that seems to thrust out of the page and toward the reader's face, the red background... Sigh, it's just perfect.
Panel from Punisher: Welcome Back Frank Part 4. Art by the ever amazing Steve Dillon.