I have not seen any and am not going to go looking for any but do believe there are ghosts/spirts. My brother in law as a child saw his grandmother have a conversation with his departed grandfather. His rocking chair started rocking and he could smell his cigar. The windows were closed and no one was in or near the chair.
My ex's aunt had tvs come on in the middle of the night when everybody was sleeping and lights would be turned on and off.
Two other people I know also saw some.