You may or may not know it. It's prank phone calls made by 1 man.
Check out Mr Miggins

George - Monies: http://uk.youtube.com/watch?v=372Ah0Z_L1w&feature=related

George 2: http://uk.youtube.com/watch?v=zPGjeAPrLog&feature=PlayList&p=AB4CB04FC9E8ABC2&playnext=1&index=17

Mr Miggins - Odeon Cinema: http://uk.youtube.com/watch?v=fYgOV5hFUQE

Mr Miggins - Computer: http://uk.youtube.com/watch?v=UGdBn5rOjfQ&feature=related

Burr - Flower: http://uk.youtube.com/watch?v=yUk0gOLoEho&feature=related

Internet Service Provider 1: http://uk.youtube.com/watch?v=yk8BQAi-tM8&feature=related

Internet Service Provider 2: http://uk.youtube.com/watch?v=M8woC9B30zE&feature=related

Ring: http://uk.youtube.com/watch?v=s_f4Id8Z8tU&feature=related

Rolls Royce: http://uk.youtube.com/watch?v=g7BzHwy0bBw&feature=related

PS3: http://uk.youtube.com/watch?v=NO0oRnMDC3Y&feature=related

PSP: http://uk.youtube.com/watch?v=cBK-06C-mpQ&feature=related

Doovde: http://uk.youtube.com/watch?v=EjH9cEoEup8

PC world: http://uk.youtube.com/watch?v=XSXjs9opy4w&feature=related

Scouse Steve: http://uk.youtube.com/watch?v=o4vxN9vP3mg&feature=related

Charlie Wong: http://uk.youtube.com/watch?v=M83cCk3e8D0&feature=related

Charlie Wong Cinema: http://uk.youtube.com/watch?v=v2d0JoFjq7g

Flat Rent: http://uk.youtube.com/watch?v=lqGE01Ofjcc&feature=related

Dating: http://uk.youtube.com/watch?v=oAeOSpw1epU&feature=related

Stanley: http://uk.youtube.com/watch?v=kZGmtHP9T3w&feature=channel