@Ishayin Settings, Keyboard, Tabs, Show Closed Tabs. I use Ctrl+Shift+Z. Once the menu is opened, you can use Access Keys 1-9 to reopen the nine most recently closed tabs, then the first letter of each entry to reopen any other tab, but be mindful that C will Clear the list (UK Interface).
@pafflick The possibility to easily create a new session with no shared cookie with any other would be definately great! It was the only nice feature of Internet Explorer and really handy both as a developer and power user.