For those who wondered (or didn't know) about the I love you sign (mentioned in the 'Dude' post below), it comes from sign language.
In the deaf alphabet, the three letters that begin each word in 'I love you' are represented in the sign. The pinkie makes the I... the thumb and forefinger make the L... the thumb and pinkie make the Y... so all three fingers together make up I L(ove) Y(ou)!
It's the sign Ryan and I make when we're too far apart to yell it. It helps that she has glasses now, as she used to just think I was waving at her! ;)