There's little to be said about The Twilight Zone that hasn't already been said before, but here goes:
This is where modern TV began. A groundbreaking TV show that encompassed horror, sci-fi and fantasy. A show that used genre to comment on the issues of the day and which paved the way for shows such as The X-Files and Lost.
The quality of the Blu-ray transfers is simply perfect. You wouldn't necessarily think that a 50 year old TV show could look and sound so good. But they do.
Added to this are many hours of bonus features, some of which are unique to the Blu-ray. You get isolated scores, commentaries, interviews and radio plays. You also get the very rare pilot The Time Element with optional commentary(though it should be noted that there are no subtitles for this episode). I cannot recommend this enough and look forward to subsequent Seasons.