For me its the Crystal Tower Raids, everytime im doing the Daily Roulette for the 24 Man Raids, i pray that i don't get these with the hopes of having at least the chance of aquiring some of the glamour from the Void arc/Ivalice raids. I even started guessing games with the random's i get within my party on a daily basis, on how many people die to skills such as climax, ancient flare or behemoth's meteors, just to make it seem a little bit more interesting and to have something to look forward to since most people seem to quite enjoy it.