Me and my mate were talking about TV shows we watched, growing up, and we both have vague memory of the same show.
In the show, the characters would jump through portals, and pop out in weird alternate universes. My mate specifically remembers a weird 'Suburbia'.
We can both remember an evil lobster, but they may have been a main antagonist, or in a single episode.
We live in Australia, but can not remember the network, nor country of origin.
I watched this when I was a kid, so either 6am-9am or 3pm-10pm EST. My mate remembers watching it at night. We don't really have a date, so 1995-2010 it was airing on australian free-to-air.
We don't remember any markings akin to Star Wars or Star Trek, but we can not rule it out.
Reading through the premise, and watching a youtube video, "Sliders" does remind us of the series, but we are still not 100% sure this is it.
It is possible that I am remembering elements from Parralax, regardless of whether this is the actual series we both remember. I definetly use to watch Parralax, as a kid, but it does not fit the time frame my friend remembers. Parralax would air after school, and he remembers the show airing at night time.
The deciding factor would definetly be those 'antagonist lobsters'.