If it's too broad, I would be okay with "just" all video games and movies
The IMDB datasets contain data about movies, TV series, and video games, under the form of compressed, tabulated data. Look in particular at the title.basics.tsv.gz file.
Advantages: It is refreshed daily. Among the available data, there's the "primary title", the original title, the release year, and the genre. Other files contain data about movie crews, ratings, language of the title, etc. See this page for more info.
Downsides: no date of release by country, and it is restricted to personal and non-commercial use.
As for the reliability of the data, I've never seen complaints relative to IMDB. Now, to ensure its reliability, you'd need some ground truth to compare it to, and unfortunately to the best of my knowledge there is no global flawless database to compare it to (Wikipedia is infamous for its numerous mistakes).
But if you really, really, really want to check and estimate IMDB reliability for yourself, a very-tedious-but-not-unrealistic alternative is to take a random sample of titles from the IMDB database, conduct a desk research on each of these titles to find if IMDB got the information right or not, and then it will give you an idea of the percentage of errors you can expect. If you want to go down the rabbit hole of how to conduct calculations for error estimation and required sample size, it is probably worth a question on Cross Validated.