I had a problem with twists becoming cliche themselves as well. Then I learned to put an even bigger twist on the twisted cliche'. For example, the damsel in distress that the PCs were sent to save arrived just as they set out . . . in pieces contained within a crate. Gruesome perhaps, but it sure did motivate the PCs to become avengers instead of rescuers.
Twists and such are not always the 'shock at the end'. If your going to twist a standard idea/cliche' or stereotype, make it the PCs that you focus on. Twist their role in the situation. Hired by a caravan (something that happened alot in my Dark Sun campaign) turned into Sack a Merchant's Caravan. Another Damsel twist had the damsel possessed with the PCs hired out to either find a way to end her possession or kill her (turning the PCs from rescuers into assassins). Met in a bar/pub . . . well, players will be drunken characters. Can't really avoid this one some times.
Also, reversing stereotypes gets old. Instead of reversing, reinvent. Evil wizards locked up in their towers with summoning circles and laboratories gets old. Instead, put the same wizard in the woods, using no laboratories but conducting the same kinds of experiments.
Twists and such are not always the 'shock at the end'. If your going to twist a standard idea/cliche' or stereotype, make it the PCs that you focus on. Twist their role in the situation. Hired by a caravan (something that happened alot in my Dark Sun campaign) turned into Sack a Merchant's Caravan. Another Damsel twist had the damsel possessed with the PCs hired out to either find a way to end her possession or kill her (turning the PCs from rescuers into assassins). Met in a bar/pub . . . well, players will be drunken characters. Can't really avoid this one some times.
Also, reversing stereotypes gets old. Instead of reversing, reinvent. Evil wizards locked up in their towers with summoning circles and laboratories gets old. Instead, put the same wizard in the woods, using no laboratories but conducting the same kinds of experiments.