Total hours watched and favorites by year immediately come to mind.

I wish you had a link to the Wikipedia page of each movie. I always do this.

I'd like to search for lists that contain maximum number of movies favourited by me, normalized by total number of checked (by me) movies in that list. So the formula of "list compatibility rating" could be:
R = (F / C+10)
R - list compatibility rating
F - number of favourited movies in the list
C - number of checked movies in the list
+10 - normalizing summand

I think this feature of recommended lists would be a great companion to existing movie recommendations.

I don't always want to tell the world I just checked a movie, whether it's because it's a movie I have already seen ages ago and just remembered to check it, or simply because I don't want to spam my Facebook / Twitter with a 100 checks of shorts.

It'd be nice to have a way to check a movie without posting it to linked social networks.

Not that I don't like it but it seems to me a bit out of place, like using an old radio as main icon for www.icheckoperas.com. A film camera, just an example, would feel more appropriate.

By adding this feature, other people can filter lists on services they use (eg NETFLIX UK)
You attract more users.
because the searches on Netflix are rubbish, everyone wins.

Comments like these:
http://www.icheckmovies.com/profiles/comments/?user=expletivedleted
or any other kind of spam could be flagged by other users, and if a comment is flagged say 5 or so times it would be collapsed. The comment could still be expanded and read, but it would be marked as spam and it would no longer clutter up the pages with obnoxious self-promotion.

Great site. I have a suggestion. You should somehow show how many
movies a person has added to the website (how many IMDB links added i guess). It would probably generate competition - movie fans can be very competitive and love the attention :) Just a thought

I click in favorite in a movie I didn't like and the page was in process of being refresh, but I click in dislike inmmdiatly I notice I have done wrong. When the page refresh, it doesnt show the favorite and dislike icons, so i have it in the two list and I cant remove it from neither.

Import watched movies file .xml from site like www.listal.com

Your To-Watch list could be imported into your Netflix queue and Amazon watchlist, then all you'd have to do on those sites is put them in the order you want to see them. Right now I manage my film lists on multiple sites and it would save me time.

Would be nice if the stats were more detailed.

e.g:

Checks: 1500
Official: 500
Movies: 1200
Tv episodes: 300
Rank: #6100
Rank title: Actor

I know that checks in eps from tv series does not affect the official rank,
but affects the total number of checks, masking the true number, this is the reason why I dont check eps,
but I want to. So, it would be great if the stats were more detailed.

that way I'll always know the answer to: "how many movies have you seen?"

Because many of us don't live in English speaking countries so most of the time it is not English titles that we see around.

When exporting lists in csv format, runtimes are not included. I expect this would be easy to add, and of interest to users.

Now that IMDb removed their decade lists, iCM should fill the gap by having its own decade lists based on favorite/check ratio.

On Last.fm they have a dynamic screensaver download where your screensaver is a selection of album art based on what you listen to. I think if it could be done here with the film posters (maybe with loved films getting a priority) it could be a cool secondary feature.

Currently a movie's INFO tab includes a display of all official lists which include the film. There is also a link to show all lists (official and personal) that include the movie.

New feature: I would like to see, in addition to the official lists, if the film is included in any of the lists that have been added to the "watchlist". These lists would be automatically displayed below the official lists. This would let the user quickly see if the movie is part of a list that interests them.

Basically if you are working on two lists. You'll want finish checking movies that are on both list. So by being able to filter, let says the 501 Must See Movies with the IMDb 250, You'll be able to find out what movie you'll need to progress on the list at the same speed.