When you find yourself trying to remember a show (or any works) that's on the tip of your tongue but just out of reach, come here - the collective brain of the TVTropes community can probably help. Post all the details you can remember (examples help). If you're looking for a trope, head over to Trope Finder. Have general questions about tropes? Visit Ask The Tropers!
FloydPinkerton
Since: Nov, 2010
GordonWay
Since: Mar, 2011
GordonWay
Since: Mar, 2011
GordonWay
Since: Mar, 2011
GordonWay2
Since: Jun, 2012
OmegaII
Since: Jan, 2001
GordonWay2
Since: Jun, 2012
OmegaII
Since: Jan, 2001
GordonWay2
Since: Jun, 2012
GordonWay2
Since: Jun, 2012
GordonWay2
Since: Jun, 2012

I saw this live-action show in the early 90s; it was an "edutainment" show for kids. No idea if it was a series or a one-off. This particular episode was about space.
The characters were a bunch of kids in a clubhouse or something, accompanied by a talking computer/robot character called "W.A.L.T.E.R.". At one point in the show, Walter went crazy — he kept repeating "Walter needs more data!" and singing the phrase "dancing weightless in the sky" to the tune of "Twinkle Twinkle Little Star". He also teleported one of the kids onto NASA's Vomit Comet.