No, you are completely missing the point. And mpc is a tool. You can use it to do anything, it can be used tastefully. A walking bassline is also just a musical tool.
A cartoon or TV show theme song, on the other had, IS distracting. It just is. If you play that kind of stuff in service the only thing it does is put attention on you (in fact if it didn't, you probably wouldn't have worried about doing it in the first place). So you can't compare a whole concept of sticking in funny songs to playing a style like walking bass. Not the same at all.
Like Big_Al said, when you approach your ministry as a musician from the place of being humble and trying to please God and help people focus on his spirit (and music IS a ministry, not just a bunch of chords and melodies... you should consider yourself grateful to even have the honor of being allowed to be used by God as a musician in his house), it's totally different from the attitude of doing stuff to get attention from people.
People are starting to look at shout music as a chance to be cute and funny and show what they know, instead of giving themselves over to God and allowing him to play through them. Shouting is becoming something people make fun of while watching somebody joke it on Comedy Central instead of something people do because they seriously are overcome by the Spirit and want to give thanks. To me that's not what this is supposed to be about
Galations 1:10
"Am I now trying to win the approval of men, or of God? Or am I trying to please men? If I were still trying to please men, I would not be a servant of Christ."
Now if you tell me you put Sportscenter in your shout to win the approval of God... Well...
One thing you will find in the scripture is that God calls us, however mature we are, to avoid doing things that cause our brothers to stumble. In Romans 14 the scripture tells us that even if something isn't completely sin by itself, you should avoid it if it causes the weaker among you to stumble. This means that, even if you have good intent, if what you do in church is borderline and causes people to take their focus away from God, it is best left for another time. And to me, this kind of stuff fits in that category.
Search yourself and ask what is the real, honest opinion you want to do these things... To server God or to please yourself or look cool for other people? And then ask yourself, is it more likely to help people receive the spirit or distract them?
If you answer honestly I think you will know.
Again, God Bless and may we all continue to grow stronger in Christ.