Someone over at the www.comiccollectorlive.com
boards showed me this:
1. Go to www.Marvel.com
2. Click anywhere on the page, doesn't have to be in a text box or search bar or anything.
3. Type in the Konami Code which is: up arrow, up arrow, down arrow, down arrow, left arrow, right arrow, left arrow, right arrow, B, A, Enter.
4. Watch the cool pop-up.