Since I have a rather interesting love/hate relationship with DX:HR (I have bought that damn thing three times for three different platforms - yet I still unsure if I like it or not), so to get my conspiracy fix (X-files reboot, hell yeaaaah!), I gave the original DX a whirl a few weeks before.
I regret to say, it has aged badly.
The level design is bland, the presentation is laughable, the non-linearity pretty much feels like the dreaded "designer says..."-chore.
I guess it has nothing to do with the game though.
Times they are-a-changin', and the game has been overshadowed by newer and better ones, most notably FO:New Vegas (Non-linear! C&C! Classless! Non-fantasy! Action! Drama! Humor!)
I guess this is the same situation as with Ultima 7.
A historical masterpiece, but do I recommend to any newbie RPGer?
No. Let them play Div:OS instead.