Mishka does this also. Almost like clock work - at 3 am EVERY morning he will purr, lick, walk all over me, and even give me little "love bites". I have to admit - I love it! Even though I loose on the sleep, it's just so sweet. I guess I've gotten so used to it, there have been a few times lately that I wake up before him and wake him for some lovies!! The last few days though - he's taken to walking on my neck... not so comfortable seeing as he weighs in at 12 pounds!