I'm sure you have, they're usually called GI Joe or action man! They're not very popular because they seem too much like toys. Well, of course really they are.. But some companies definitely produce toys - and others produce models. The distinction between say a tamiya model or a corgy car or something. If that makes any sense. At any rate, they're great for a level of detail you cannot get with the smaller scales. 1/35 stuff can be great for a balance between detail and scale - excepting of course KG von Abt, which seems to have confused its scales somewhat!
Dom