Has anyone ever tried to summon a "spirit", possibly all for the name of scientific proof?

>The worst thing about summoning a sririt would be that you have no control over who or what is going to make an appearance! I won't get into everything that happened, but when I was much younger, a group of friends was messing with a ouija board. ( I personally did not mess with it, but I was present ) Afterwards, for weeks there were all sorts of crazy weird stuff going on in that house. A girl who was dating the kid who owned the home was even shoved through a wall by an unseen force. NO B.S.!!! I may seek out proof of afterlife, but personally, I will never try to summon anything to visit. If it's there it's there. But when you summon something, it may just decided it like's it there and decide to stay for a visit. You get to go home with everything, but the home owner/property owner get's to play with a new friend that may not be so friendly. TV is what TV is. entertainment. Any of us doing real research knows its boring, long drawn out ordeal's that usually wind up with very little or nothing from the experience. I could only wish every place I have ever been would have had a haunting! Maybe then it would justify the expense's I have incurred for doing this hobby?