I love that every Sci fi show eventually does the "out of phase" episode, and I love seeing the fun twists and flavorings they use to make it "their" version.
Like Stargate sg1 and their crystal skull radiation and advanced dimension-shifting technology episodes.
And my personal favorite lampshading for this is actually from Stargate. in the in-universe parody show "Wormhole X-treme" one of the main character parodies asks "if I'm out of phase, why don't I fall through the floor?" and the response from the writer/director/producer/whatever he was, was something along the lines of "I'll have to get back to you on that"
My favorite part is all the inside jokes they pack in as well. You don't really get all of them as a viewer, but I've watched every episode with commentary, and a lot of interviews with a lot of the directors, producers, prop/costume/sfx people.
Nothing beats the "special effects coordinator" guy screaming BIGGER at everyone after they show him progressively larger explosive effects.
In Batman Beyond, the out of phase person is a bad guy. He's using a machine to control his phase. Eventually he loses control of it and he really does fall through the floor. He's stuck in the center of the earth for the rest of the show.
EXTREME WARNING if you have something important to do today. The above link is to TV Tropes. It's too late for me, but you still have a chance to be productive today!