> i just started learning Common Lisp a couple of weeks ago. Coming from a strong OO programming background, i can honestly say it is a completely different mind-set.

You might not see it much in beginner materials, but idiomatic Lisp code tends to be fairly object-oriented, using the Common Lisp Object System (CLOS). CLOS is still a bit different from OOP in a language like Java, though: it's a much more powerful object system.