Weird 90s TV Shows

I've been thinking about these two kids' TV shows that used to be on Channel 4 in the 90s, but I can't remember what either is called. Please help me, tis driving me crazy!

My first is a really vague memory, from early in the 90s, I think used to be on midday on weekdays. It was live action, about a boy who discovered this remote control and a robot (I think). There was a button on the remote control that sucked him into this strange TV show. I also remember something about a clock, and him always looking at it. There were also some struggles as he went through wormholes (or portals) as he dropped the remote control and had to make sure he didnt lose it (again, I think).

The second TV show was slightly more recent, early on Saturday mornings, this time a boy fell from his treehouse and went into a coma. There he entered a strange parallel world. Towards the end of the series his dad entered this world.

Any help would be much appreciated, especially for the first one.

I think it was a series. It wasn't very high budget. But if you think you know, please tell.

Pob's Playtime
2 series of 'Pob's Playtime' were made in the following two years. In these programmes the guest told a story using wooden Pobbly people, vehicles and houses. Pobbly town was built in giant sandpit. Pob would dig his way under the sand so that he could interact with the guest and the Pobbly town folk. On one memorable occasion the jam tanker leaked all over town causing a terrible traffic-jam (and incidentally giving everything in the studio the texture of sandpaper).

What about Bucky O'Hare the only green rabbit on telly?

One very sketchy channel 4 show was Pob. Pob was very cool, though racist and very strange.

I remember him spitting on a screen (in polish nonetheless) and writing pob in it and a big box that Dick King Smith had to open but he had to devise a crazy machine to do it otherwise he'd get covered in crap.
And the psychadelic backgrounds and the sandpit where they told stories and after the story Pob was left a present and he had to dig under the town to find it and ended up knocking EVERYTHING over.

I'll see if I can get the link to the film clip of pob I found and realised it was racist...give me a few

What about Ulysses 31, a very crudely done sci-fi programme that was based on the greek myths (I watched it last night they found Orpheus trying to get Eurdyces, though I'm pretty sure that wasn't the original) and I'm still unclear as to what the little red robot was for.

Jayce and the Wheeled Warriors, best theme tune ever

Denver the Last Dinosaur (he's my friend and a whole lot more (?!?!??!))

Brass Eye was pretty cool - and i remember all the above ones from my childhood - i still have the mythology one on video tape - art malik as orpheus i think - and Jason and the wheeled warriors did have a cool theme but the enemy scared me at times

Is anybody still unclear as to what Krang's purpose was?

Yes, I am. I'm also still unclear on what the name of my mystery programme was.

Was it "Zap!", or something like that? Although I think that was on ITV.