Karmageddon: Steal a fire truck and then cause as much chaos as you can.
Noodle Punk: Grab a scooter at the noodle restaurant and start making deliveries.
Car Salesman: Earn a commission by taking customers on successful test drives.
Trashmaster: Race across Liberty City to collect all the dumpsters within the time limit and drop it off at the Junkyard.
Insane Stunt Jumps: Use the PCJ600 bike and other new vehicles to soar over the ramps, hills and jumps found around Liberty City.
Links: Gamesradar Preview and new screenshots
*UPDATE* IGN have also added a side missions preview, they look at some different ones, including the following:
They also have some new screenshots with their article.
AVENGING ANGELS - Put an end to violence in Liberty City, help keep the streets safe.
SCOOTER SHOOTER - Toni and his friendly scooter driver have to take out as many targets as possible within three minutes. He drives, Toni shoots with a Tec-9 with unlimited ammo. Wreak havoc on targets within the city; get as many as you can before time expires.
BIKE SALESMAN - Show the customer exactly what that machine is capable of, but only show off the kind of ride they're looking for!
SEE THE SIGHTS BEFORE YOUR FLIGHT - Get a picture of the tourist in front of their favorite landmark, but make sure to get them back in time for their flight! Quality counts, great snapshots will be rewarded with extra cash.