I have a convergence problem where my eyes don't work together properly. I got sick at enough 3D and IMAX movies to avoid them like the plague. I am waiting for Avatar to come out in 2D so I can see it locally or rent the DVD.
For the nausea, try drinking some ginger tea made with real grated ginger root, or sucking on some candied ginger root.
Ginger works so well for nausea that some OBs are prescribing it for morning sickness.