Sesnse perception + comon sense (I see...)
Memory
Deductive - mathematic
Deductive - logical (same as above, plus macrocosm/microcosm fun)
Inductive/Inference based on past patterns ("It is Bill calling - he always calls at dinner time," "Bill will call at dinner time tomorrow")
Appeal to authority - "Experts say," "the history book says"
Revelation
Intuition
...And my least favorite, the statistical inference, i.e., "Americans feel the next Pope should be liberal" - the part-to-whole based on inference that the part is like the whole