First this because I think I'm in love with your avatar dammit,

When I have read judicial decisions and dissenting opinions (for classes), I see alot of uncommonly well-reasoned and independent thought that leads me to believe that none of those guys are anyone's puppets (referring to the Supreme Court). Their opinions are shaped by their philosophies as regards the Constitution (strict or loose constructionism) but I would not accuse a single one of them of being a puppet.
Not enough decisions to review for Obama's most recent appointment but it takes a very independent and intelligent person (demonstrated by published decisions and opinions) to get nominated to that office. Lower level courts are not subject to the same scrutiny so yes it may be possible to find some impropriety there if looking for it.