Memorizing things.
Most people with an Eidetic Memory have one thing that they can't remember at all though... mine is Music Lyrics which is most likely because I can't hear them all that well. I'm terrible at it. But I can memorize a speech with only a couple reads.
I may be the exact opposite, because I am pretty amazing at remembering song lyrics and mostly useless stuff like movie/tv show quotes. My family always asks why I couldn't better apply it to remembering stuff for courses I wasn't interested in at school. For whatever reason I have about 4,000 songs in my iTunes library and I probably know 95% of the lyrics to at least 3,000 of those songs. I can even remember lyrics from a song I've heard in the past once it comes on even though it may have been 10 or 15 years since I last heard it.
There are also about 15-20 different movies I can quote line for line. (Dumb and Dumber, Forrest Gump, Anchorman to name a few.)
I can be pretty emotionless whenever I need to be. But it's a blessing and a curse.
I don't know if its similar to this, because I don't necessarily have to lack emotion, but I am very good at not sweating stuff/keeping my cool in most social/high pressure situations. Job interviews, tests, dealing with authorities, etc. Really anything high pressure for the most part I'm good at. The only exception would be talking to a girl I REALLY like, then I turn into an idiot mumbling nonsense, which is just awesome.
I've heard that resisting the temptation to cheat on your SO is difficult for a lot of men. Not me.
I definitely share this with you. I have had many girlfriends and never cheated on a single one, even though I've been cheated on at least twice that I know of. It is a really crushing feeling to have your heart ripped out when someone you love does that, so I just don't get the mindset of a cheater. I loathe the idea of being responsible for putting someone else through that pain on purpose.
I think a lot more men have no problem being with one person once they've really matured/settled down (not 18-25 anymore) then society would like to lead on. I do have some friends who are pathological cheaters, womanizers, and repeat offenders. Unfortunately some women LOVE those guys, I don't believe ALL women do, but it is frustrating to see these women who seemingly love to get hurt emotionally over and over rather than be with someone loyal.