I still can't eat plain cooked spinach (even with garlic or onions)...so I just find a lot of ways to incorporate it into other things. I find that chopping it up really small before you cook it helps as well...I hate the slimy texture of spinach, so if its small I don't seem to mind it as much.
Anyway, like someone already mentioned, you can put it in with you eggs. You can chop it up and make a meatloaf with extra lean ground, onions, spinach and whatever else you might want to add. you can cook it up and stir it into a batch of quinoa. Add it to other mixed veggies. Make JB's tuna burgers and mix in some spinach before cooking. Make like a spaghetti sauce and stir in a bunch of chopped up sauted veggies. (The tomato sauce helps distract from the spinach taste, and the other veggies...such as peppers, shredded carrots, onions, celery, etc....take away from the bad texture).
Anyway...there are a million in one ways to eat it without just eating slimy, gross, sea-weed looking cooked spinach. You just have to get creative!