I already saw some nice rooms and setups in other threads (f.e. in several PC threads "Show me your Powah"), but I couldn't find a special thread dedicated to the rooms.
For starters, here is how my movie/TV/gaming room evolved over time from 1994 to the present:
1997 I replaced my first TV (Saba, 24'') with a "Sony KV 29F1D"... a 29''-CRT with a gorgeous "Black Trinitron" display. It still works! Nowadays my retro consoles are connect to it. A few months after that, I got infected by the DVD-virus (which started my movie collection) and I added my first 5.1-surround system (Yamaha AVR, JBL speakers). In 1999, I replaced my first PC monitor (Magic, 17'') with an awesome but very heavy 21''-CRT (Iiyama Vision Master Pro 501).
Here are photos of my room of 1999:
Since most DVD movies and console games took advantage of a widescreen display, I switched to a 32''-CRT with 16:9 aspect ratio in 2001. But that wasn't enough... I wanted to go bigger and bought my first projector + projection screen in 2004:
Beside the games, Xbox 360 and PlayStation 3 also were good entry-level players for HD-DVD and Blu-ray discs. Early 2008 I upgraded the 720p projector with an 1080p model (Sony VPL-VW 50). To not burn through its lamp too fast, the Panasonic projector was allowed to stay for 720p content. On the PC side, I got my first flatscreen monitor (Dell Ultrasharp 2407 WFP) in 2007... it still works and is the main monitor of my brother's PC nowadays.
Here are some photos of 2008:
In 2011, I fell in love with 3d-stereoscopic games (Nvidia 3D Vision), so I added a 3D-compatible second monitor (24'' Acer, 120 hz) on my desk. For stereoscopic movies and PS3 games, I upgraded my TV to a 3D-compatible model (47'' LG 47 LM615S).
Here is a photo of 2012:
Late 2016 the PlayStation VR headset opened a whole new dimension of 360°-gaming (and 180°-movies) for me. I was struck by the immersion of being in the game world instead of "only" looking through a flat window into the game world.
Here are two photos of late 2016 + early 2017:
A few months later, I also got my first PC VR-headset (Oculus Rift). But I still enjoy movies and games on a flatscreen very much, so I upgraded my PC monitor to 27'' and 1440p resolution in 2018 (Omen by HP 27).
Since the middle of the 8th console generation, more and more people enthused about HDR and after that about OLED displays. In 2019 I couldn't wait any longer and joined the gospel with an OLED TV (LG OLED55C9PLA, 4K, 120 Hz, HDMI 2.1). My worries about the bogeyman "burn-in" were unfounded... still no visible burn-in after over 5 years and tons of content on that TV display.
Here are some photos of 2019:
By the way, every hardware upgrade is a good timing to clean behind the media rack and under the PC desk. 
And despite the former opinion of our electrician... the 15 power outlets in that wall were never overkill but needed.
After upgrading my PC for several years, it was replaced by a new build in late 2020:
Since then, the new consoles (PS5 + Xbox One X) were welcomed into the family and the VR headsets were replaced by HP Reverb G2 + PSVR2. In 2023 was another big PC upgrade to RTX 4090 (which needed a bigger PC case) and a 42'' OLED monitor (LG OLED42C27, 4K, 120 Hz, HDMI 2.1). Due to the feature parity of my 55'' TV and the 42'' monitor, switching the PC output between them works flawless.
Here are the most recent photos of that room, taken in 2023:
I hope some of you enjoy my retrospective and add some photos of their rooms, too.
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