I do, and I took my boy (7) to see ''Sharks 3d" at the Science Museum IMAX cinema. What a gobsmacking experience (for both of us). The 3d rendering, sound (gut churning) the whole experience was amazing. The show had my boy reaching out over the seats in front of him trying to touch the turtles that were hanging above the guy's seat 2 feet in front of us. If your sole experience of 3d films is 'shark boy and lava girl'... not much can prepare you for this, nevermind your kids. In his own words when I asked him if it was cool afterwards.. "that wasn't cool, it was fantastic!" take a chance and take your kids there... (and don't even get me started on the science museum itself, possibly the best place to take kids in london ) .. with admission.... FREE!