House and Dr Who have subjectively boring episodes. Dr Who reboot, for example, have great actors but no so great budget (which is fair for Dr Who as a whole, it's low budget sci fi from the start). But House was quite stable from start to finish, if you didn't like first episodes, you wouldn't like whole show. You may be like the concept of it and some scenes/parts, but it's like picking pepperoni from pizza and eating them separately.

Supernatural is pretty stable in first seasons and get somewhat bonkers later. But it's pretty much character show (same as House and Dr Who) and characters and their chemistry is pretty much always there. So if you don't like what you see now, you wouldn't like it later.

Can't say anything about Start Star Trek.

You can always do what i did with Agents of SHIELD. I didn't like early season procedural nature of the show, it was kinda generic for me. But i kept hearing that later seasons are amazing and i wanted to see Ghost Rider in context. So i watched whole thing at 1.25-1.5 speed, which is helped with parts that was boring to me, but allowed me to not skip character growth as a whole. Funny part: some scenes was actually more natural at 1.25 speed. I guess they could be directed to be longer, so they could help with runtime.