Do we have a topic here in the forums that talks about an in depth analysis of asian movie invasion in the west? I want to know when the asian invasion started and what are the implications and impact of it to the west?

The film discussions here are spread out over individual country sections and individual movie chats.
The Entertainment section has some interesting threads and the Malaysian and Indonesian sections have both got a well-established film appreciation community.

The 'Asian invasion' is nothing new. It dates as far back as the early 1950s, particularly with Akira Kurosawa's movies, such as Drunken Angel (1948), Stray Dog (1949), Rashomon (1950), Seven Samurai (1954), The Hidden Fortress (1958), Yojimbo (1961), etc. Many of these movies were remade into Hollywood or European movies, like The Magnificent Seven, The Outrage, Fistful of Dollars, Star Wars, Last Man Standing, etc. There were also other influential Japanese movies at the time, including Tokyo Story (1953) and of course Godzilla (1954).

Alongside the 'Japanese invasion', there was also an 'Indian invasion' in the 50s and 60s, with Bengali films being influential in the West, particularly Satyajit Ray films like The Apu Trilogy (1955-1959) and Charulata (1964) for example, as well as some Hindi movies by the likes of Raj Kapoor and Guru Dutt. It was followed from the 70s to the 90s by the 'Hong Kong invasion', with Bruce Lee's posthumous international stardom and the rise of Jackie Chan, John Woo, Ringo Lam, Chow Yun Fat, Jet Li, etc.

From the 80s, the 'anime invasion' began gaining a stronghold in the West, largely thanks to Robotech (1985) and Akira (1988), although some earlier anime were popular in the West as far back as the 60s (like Kimba the White Lion and Speed Racer for example). In the early 2000s, there was the rise in popularity of J-Horror films. By the late 2000s, films from China (action/drama), Japan (action/anime/drama/horror), South Korea (action/drama) and Thailand (action) have become increasingly more mainstream in the West.

I love to watch Korean movies, Thai and Japan's horror movies.