OKAY now that I pointed out the obvious...
I've always felt that we got short-changed when GL killed Maul off so early in Episode I ~ It could have been REAL cool to have seen an ongoing duel with Obi-Wan that spans all three movies. That and it would have been super sweet to have seen Maul in the Clone Wars toons!
BUT I just watched the Clone Wars toons for the 10th time (?) and in the last episode with General Grievous I noticed his eyes again... A creepy bloodshot yellow - like Mauls (Then the white robes that kinda reminded me of when Gandalf is "reborn" as Gandalf the White) and the fact that he is SO skilled with the lightsaber...
So could General Grievous actually be a restored Darth Maul?