Silver Surfer and Thundarr the Barbarian

 

I still think that Keanu Reeves would be a good choice to play The Silver Surfer, but he may think that the role is too similar to the part he played in The Day The Earth Stood Still.  The role will require an actor that can be emotive while stoic, it's all about the voice.  Galactus will most likely largely be a product of CGI, so the performer's voice will be paramount there as well.  I haven't heard a peep about either character actually showing up in the MCU yet, so I'm guessing that Marvel still has a few years to cast these roles.

Thor and Thundarr the Barbarian

 

I remember Thundarr the Barbarian being a pretty cool concept, but that the episodes all had a certain sameness to them.  I am sure a lot of that had to do with how much footage and musical cues were re-used in each episode, a common practice for animated shows of the time.  I wouldn't mind seeing an updated version someday, though.

Kamandi and Thundarr the Barbarian

Thundarr the Barbarian always kind of reminded me of Kamandi when would catch the cartoon as a kid.  Add in the Jack Kirby connection and this sees like it would be a natural team up.  I remember thinking the show was fun, but the abundant use of stock footage almost made it feel like I was watching the same episode over and over