As you get older, and particularly if you have daughters (as mentioned below in reference to Anthony Weiner's creepiness), you begin to feel odd looking at the Sports Illustrated swimsuit models. Cheryl Tiegs was the cover girl when I was in my teens... that's OK. Christie Brinkley was the main model when I was in my early twenties... that's OK too. But the girls now could be my daughters. So it's a little... uncomfortable.
That being said, I really love this girl, Daniella Sarabyha, from Brazil, whose been in recent SI swimsuit issues. The thing I like about her is that she usually is smiling... most models put on this pouty model face that seems silly and pretentious to me, and makes the swimsuit issue a little too much like porn. This girl seems like someone you wouldn't mind having your son date (although, FYI, son... she's out of your league).