This current season (6) will be finishing around mid May-early June. As far as I am aware, NCIS will be returning for at least another season (7) after that. It is doing well at the moment - the ratings are huge and it is very popular
That's quite a hard question to answer. We know that season 7 will happen, but beyond that we don't know. At the moment, NCIS is doing very well and it very highly rated. In my opinion, I think it would get up to 10 seasons
Answer
Well so far there are 6
Answer
The sixth season finished last month (May 2009) and we know that there will be a seventh season starting around mid-late September 2009. Beyond that, we don't know. NCIS is doing very well at the moment and the ratings are high, so I think we should see a few more seasons yet. I think it could make 10 - 20 seasons because there could be lots more stories and introducing new characters and they could have like crimes from around the world and stuff. that is just my opinion though of what i would add but i love the show and i think it could easily push 22 seasons with how many viewers it has. I don't ever want tit to end!. IT IS THE BEST SHOW EVER!!!!
Edit: It's annouced that there is going to be another season of NCIS, season 8 which is aired in Spetember 21st 2010 in the USA. It is unknown whether they are going to make more seasons.
Until the ratings drop, or the producers decide to end the series, which doesn't look likely to happen anytime soon because it is very popular and the ratings are high. Season 7 will be starting in September 2009. I think it could get up to 10 seasons.
This fall there will be a new spin-off series called NCIS: Los Angeles. However, they will both be very different and have different casts.
Seasons 3, 4 and 5
NCIS is currently airing season 10 there is no news yet if it will be back for a next season or not.
As of November 24, 2010, there are 7 complete seasons and we are 9 episodes into the 8th season.
Seasons 1,2,3,4 and 5 are on DVD and season 6 will be released in America on 25th August 2009
Sasha Alexander plays two seasons on NCIS.
Seven
Seasons 3, 4 and 5
There have been 8 full seasons of NCIS as of 2011 and Season 9 will begin in September 2011
As of fall 2010 there are now eight seasons of ncis
there are 9 seasons on dvd and season ten will start in america on september 25th
NCIS is currently airing season 10 there is no news yet if it will be back for a next season or not.
As of November 24, 2010, there are 7 complete seasons and we are 9 episodes into the 8th season.
Seasons 1,2,3,4 and 5 are on DVD and season 6 will be released in America on 25th August 2009
Sasha Alexander plays two seasons on NCIS.
NCIS's first episode aired on September 23, 2003.
Yes, Sasha Alexander plays Agent Todd in the first two seasons of NCIS.
she came in the beginning of season three. she became a mossad liason officer to NCIS in episode 4 of season 3.