SNSD made their U.S. television debut earlier this week on CBS’ “The Late Show with David Letterman“, and after watching their performance of the English version of “The Boys“, actor and singer-songwriter Simon Curtis has declared that he is now a fan of SNSD!

Curtis is most known for his role in 2009 Nickelodeon movie ‘Spectacular!’, and has also released two studio albums. His latest album claimed the 20th spot on Billboard’s Dance/Electronic Albums chart in 2011 on its release day.

Check out all his tweets related to SNSD below!

I know today is Madonna day, but I can’t tear myself away from Girls’ Generation & their Letterman performance.

Whoa, so many people reacting to my love for Girls Generation right now… where did this come from?! Lol. *does the dance from The Boys

I would share my favorite Girls Generation member, but i have yet to learn their names. Sigh. So much perfection.

*my favorite kpop groups are f(x), 2ne1, & GG.

@focsy oh I already have a boa album!

Okay, my favorite is the chick with the black hair on the left at 0:41 -whats her name?! *she does the hair flip

Ahh Sooyoung. Thanks guys! Now I can rave about obsessed I am with her. <3. She is the ULTIMATE

Does Sooyoung have a twitter?

@TheProphetBlog @GirlsGeneration ugh I’m stanning so hard for Sooyoung right now…

Goodnight GG fans. Nice to meet you all tonight. Thanks for the help sorting out my favorite. Check out my tunes sometime ;) xxxo

Ummm… kpop fans are beyond legit. I had no idea. Seriously blown away by the reaction to my girls generation stanning

Having such an amazing weekend eating junk food out in the desert, snuggling a chunky baby, & making everyone listen to kpop. <3

I love how my timeline has been filled with Sooyoung links for 24 hours now. Dying with Korean bubblegum love.

@freitasdiogo haha it’s a fatal Korean virus!!! Lol. I’ve fallen ill with GG fever!

I just realized that my favorite phones are Samsung and my favorite music at present is kpop… I might need to visit Seoul.

Source: Simon Curtis’ Twitter