Originally Posted by Superman Earth1
Lex Luthor knowing Superman in Smallville was his origin before the crisis. In the comics Lex and Superboy use to be best friends but an explosion caused Lex to lose all his hair when trying to find a cure to Kryptonite for Superboy causing Lex to lose all his hair and him to disliking Superboy because he (Lex) felt he was doing all this work to save him (Superboy) but he couldn't save him from the fire. Also while I agree with you that SV does get a bad rep but a lot of it was to their own doing and it never really had that big of an influence on the comics outside of Birthright. Personally I loved the show but outside of Birthright it really doesn't have that much of influence. Even in MOS outside of making the Kents younger and using Whitney and Chloe's last name it really had no influence on the movie because most of the stuff in it (tornado, Clark's reaction or how the Kent's told him where he came from,Lexcorp/post crisis Lex etc) happened in the comics, S:TAS, Lois and Clark and other forms of media first. However the best thing SV did that I saw in MOS was they skipped the love triangle and had Lois already know Clark is Superman. SV had to do it for obvious reasons but I like that it transferred over to the movie or at least I like to think that's what it did.
I think it had some influence on Geoff Johns Secret Origins(Clark in red jacket/blue T-shir, John and Martha look, How Clark's heat vision started, Parasite getting his powers because of Kryptonite, Clark saving Lana from herself from tornado being few examples) and Boyer he did watch a few Smallville episodes as influence.
And it was horribly underrated.(it had alot of good moments and if you ignore the love triangle drama which at times were interesting it was a great show, and was as faithful as any other media adaptation of a DC/Marvel comics story). I really like when Superman writers praise Smallville and show some appreciation for the show.