Walking into a restaurant and having two little boys run up to you for a big hug and then attach themselves to your legs is a great thing.
I am not always awesome uncle though. I had to tell them the "Fart For Free" App* on my Iphone isn't appropriate when we're out at dinner, and that I had to leave instead of spending the night and playing Wii, because I have this thing called work in the mornings.
*Hell, even I like that app! Farting is always funny, especially in church.