If you like to watch shows about children's card games then you will like this. If you like Egypt then you will like this. If you like laughing at 4kids dubs you will like this. If you like to see children becoming depressed and stabbing their father then you will like the original Japanese version.
Yu-Gi-Oh has everything. Card games, Egyptian artifacts, big monsters, highly effeminate guys (perfect for fangirling over), woman with breasts that are so big they are out of proportion with the rest of their body, Dan Green, bad puns, Mokuba Kaiba, Shadow games, rules screwing, friendhsip, did I mention card games?, Mind control, mind crushes, plot twists, grandpas, sisters, pharaohs and more!!
It is recomended that you watch the original Japanese version, due to the fact the 4kids edits out half the stuff that happens, like the time Bakura cuts his own arm, or the time he takes out Pegasus's eyeball and licks it, or the time Marik stabs his father, or the time Joey punches Tristan etc.
Overall, Yu-Gi-Oh is a fun show that everyone will enjoy. And I mean EVERYONE. From 12 year old girls the 46 year old men. (It's sad because that's just my family.) So watch it now! The millenium rod commands you to!
(Also, I am NOT a fan of GX or 5D's. I, others may disagree, recommend you to avoid them.)