Now...as those who have seen the ENTIRE series know, Lelouch dies at the ending of the series as part of his master plan.
Here's what pisses me off though: people don't seem to want to accept this death, most of these people being stupid fucking weeaboos.
Accept it people, Lelouch is dead and he isn't coming back. Now, I've heard some good arguments in regards to how he can be alive still, but I'd like to explain something to you in regards to quality of an anime vs. how long it's been running.
When you run a single version of a series for more that about 50 episodes, you run a very large risk of becoming stale. The main series of Code Geass ran for two seasons of 50 episodes each. Now, if Lelouch LIVED at the end of the series, this would obviously give room for a new series to follow up...therein lies the problem. See, if you run a series like that too long, it soon becomes stale and thus the series suffers, rots, and dies (see Inuyasha, Naruto, etc.).
A very well thought out argument I heard actually follows the nature of Geass and Codes. According to a video I found on youtube, the person argues that Lelouch has effectively become immortal. Allow me to explain the fault in this logic. Firstly, as from my own watching of the series, a Code can only be passed down to by the giver to one they gave Geass too, and they must have maintained their sanity upon reaching End of Geass (According to C.C.). Also, for the Code to be passed down, the giver must experience bodily death. Until the giver dies (which occurs within minutes of passing on the code, obviously by a form of ritualistic suicide as evidenced by the stab wounds in both the nun AND V.V.), the passed on code will be inactive. Some may think that the one who recieved the code must die, but this is in truth another false. The nun and Charles were more than likely testing if the passing of the code worked (as the none probably stabbed C.C. before she died as well). Some may also think that when Lelouch killed Charles and Marianne, that he had taken Charles' code. This is HIGHLY unlikely as Charles wasn't killed in a way like the others before him, his death was actually more of an erasure from existence.
Sorry, but people need to come to face the truth, Lelouch is dead and you can't do anything about it aside from writing fanfics.
If that isn't enough of a nail in the coffin for you guys, writer Ichirō Ōkouchi has explained the situation of Lelouch's death and Lelouch's name is in the official NewType magazine Death List for the series. If you want to check out a spin off where he may have a chance of living, you've got two available: Suzaku of the Counterattack and Nightmare of Nunally. Don't expect a director's cut or the manga to have a different ending at all either. If you're one of those crybabies who still wishes for Lelouch to live, then here's the best edit of the final ending I've seen to sate your lack of tastes rather than let a good ending stay good.
http://www.youtube.com/watch?v=R_jRCftsWnA&feature=relatedAnd here's the official NewType death list for you guys, though it's in japanese