World of Warcraft did a lovely job with a time travel scenario in the most recent expansion. At one point, you have to fight off a horde of enemies to protect a beacon that is (if I remember correctly) basically healing a loop in the time continuum. But to give you an edge, a future version of yourself appears, traveling back in time to assist.
And he/she spends the whole time borderline insulting you, whispering such things to you as, "I can't believe that I used to wear that," "Look at you fight; no wonder I turned to drinking," and "Wow, I'd forgotten how inexperienced I used to be." (Also, one of my favorites: "Listen. I'm not supposed to tell you this, but there's going to be this party that you're invited to. Whatever you do, DO NOT DRINK THE PUNCH!") As he/she leaves, he/she notes, "Farewell. Keep us alive and get some better equipment!"
Of course, this means that later on... you get a quest to back in time and help out your past self. Who spends the whole time borderline insulting you, whispering such things to you as, "This equipment looks cool and all, but couldn't we have done a little better? Are you even raiding?" "I think I'm going to turn to drinking after this," and "Looks like I'm an underachiever."
Apparently in World of Warcraft, you're a real whiner.