It is funny - one time, totally out of the blue, I got one of those "Pass this on to 10 people" emails about some sappy-ass bullshit. Got it from a co-worker I didn't even know in the building (about 200 people there). I politely sent him an email saying to please not send me those again as it took up my time to read it/delete it, it screws with the email system and servers, and had nothing to do with work. WOW - the response I got peeled paint. I found out where he sat, went over to him, and told him that if he didn't clam his ass down and man up about someone's request to keep non-work related crap to himself, we'd be having a talk with management. He profusely apologized.
Found out later someone else forwarded pics to some people, many of whom forwarded to others, of VERY fat women in bikinis in the back of a ford (I think it was called "Haulin' Ass" and everyone who forwarded them got written up. How stupid can you be to do that shit at work?