Bored. Give me a good "Living room PC" distro

None. Move your living room to the forest and never look back. Be free.
- But there's no memes out there!?
  
  The memes are the friends we made along the way :)
- Not free, hard to get food and necessities, but yeah, some days I wish it was that easy, though I'd be hella bored.

https://libreelec.tv/ If you like Kodi this is the business. I have had it working with remotes, the biggest drawback for me was streaming services not supporting 4k on the Odroid N2+ I was trying to use. Plex worked great through Kodi, and that was my biggest use case.
- I'm a Plex guy so that part is appealing but I admit I mostly watch youtube in this scenario
  
  Yeah, I'm not sure how well YouTube is going to run on Kodi, I've never actually tried it. If you have another Linux box around you could install Kodi and try it pretty quickly.

I tried using bazzite as a media PC and gave up after a couple of days, this isn't even remotely something I want in my household.
try it on fast hardware and make up your own mind. good luck!
p.s.: plasma bigscreen isn't available for public use and kodi and its derivatives should be tossed in the deepest volcanoes we got.

I got openSUSE Leap. It's stable and reliable. My complaint is that I needed to go thru all the hoops to get all the media codecs I need to play what I want.
- Glad you like it, not sure it's a fit for my lazy living room machine though.
  
  Honestly, I picked it because I was lazy. It's such a low maintainance machine. As for the codec, the flatpak version of VLC does it.

I use Q4OS as it is super light but Debian based. Install KDEConnect and I run a dumb large TV as my TV and control it from my phone. If younwa5ch YT, run Freetube.

I've been using Nobara. If you are looking for an open system to tinker with, it is a great choice. It runs with pretty bleeding edge packages though.

Used cachyos for the last couple months, its a graphical installer, automatic everything, and when it loads you get a startup menu that you can click install gaming packages on to get anything youd download for gaming, its supposdely the only distro actually optimized for gaming and detects your hardware automatically to grab everything.
Off the install and one click installing those packages everything on my steam account (after checking proton compatibility cachyos setting) worked fine for me. Blender also works well, but in that case I needed to grab a driver for amd.
Bazzite made me nervous, I like being able to clixk through the install seeing what im doing. I reinstalled windows right before and did dualboot first, before removing windows and sticking with just cachyos. Cachyos was about 10x easier to install than windows and 1000000x faster, like it straight up took 2 minutes maybe while windows takes 2 hours, I was shocked that it was actually done.
- I also really like gparted, originally with the dual boot I had to manually partition the drive for the os and the boot paritition, took a couple minutes to figure our and its very convenient to be able to mess with your ssd easily just by plugging in a usb and booting into the live os from there. Idk if any other installers do that, if anyone knows please let me know, like the usb boots into kde plasma and you can kind of test out the ui while clicking through the gui installer.