i disagreed with my first point as well at first. but aside from the agruments that i already made for it in other posts, the sith musich plays in the background when shmi is on the screen. and if you look at the ceiling in the skywalker home, its got the same sith markings that maul tatooed on his face. sidious put them there to subconsciously prepare anakin to be a sith, to bring a dark side aura, if you will, into the room.
in addition, star wars movies follow a pattern, and things in episodes IV-VI are meant to reflect events in episodes I-III. ex: anakin losing his arm in AOTC, luke losing his hand in ESB. anakin and lukes lives are meant to parallel. in ANH, we thought there was no mystery to lukes father. in ESB, we had a big surprise. in TPM, we here that anakin has no father. riiiiiiiiiiight. lucas is not going to leave it at that.
sidious genetically engineered anakin to be the most powerful jedi ever, then placed him on tatooine, an outer rim planet so that the jedi could not find him at a young age and train him. anakin would grow up without being taught by yoda to learn to control his feelings. what do you get when you have a jedi with the highest midichlorian count whos emotions control his feelings and actions? you get a sith. the most powerful sith ever.