Tires (visual daily, pressure check about once a week)
Lights - headlight high/low, turn signals, brake
Make sure gas still sloshing in the tank
although it should be FULL from the last ride...
If no fluids under the bike, no problems...
I will check oil, coolant, brake/clutch fluids if I'm planning a long ride or about a couple times a month.
Other than that, I hop on and go...