Welcome to Screen Rant’s “Geek Picks,” where we collect the finest movie-related geekery from around the Web. Today you’ll find everything Wrong With Iron Man 3 According To Fans; Back to the Future As A Broadway Musical; an honest trailer for After Earth; Jimmy Fallon, Miley Cyrus & The Roots Sing an acapella version of “We Can’t Stop”; the best Halloween news bloopers ever; and 30 life hacks debunked. All that and more on this edition of SR’s Geek Picks!

If you have any Geek Picks of your own, please send them to srgeekpicks(at)gmail(dot)com and you could be featured in a future post!

“Great Scott” – Back to the Future As A Broadway Musical (Sweded)

What if Back To The Future was a broadway musical? This riveting duet is from the climactic scene where Marty tries to save Doc’s life but risks disrupting the space-time continuum. Will Doc listen before he sends Marty back to the future?

Sing your own with the Sing-Along, Karaoke version:

Watch the Behind The Scenes:

Best Halloween News Bloopers EVER

A collection of the best Halloween news bloopers of all time.

30 Life Hacks Debunked

A weekly show where knowledge junkies get their fix of trivia-tastic information. For our 30TH EPISODE!!, John tests 30 “life hacks” to see if they work as promised.

NEXT PAGE: Iron Man 3 fan complaints….

Best, Sluttiest and Weirdest Store-Bought Halloween Costumes for 2013

Cosplay is for all year round — but dressing up in weird store-bought approximations of your faovrite characters only happens once a year. Spirit Halloween has rolled out this year’s prefab costumes. So here’s io9‘s annual look at the best, weirdest and trashiest Halloween costumes you can buy.

Welcome to the Shrubz Music Video

Video created by Brad Carter of http://www.phonelosers.org
Here is a music video for Welcome to the Shrubz, from the For The Kids album 2009. The movie clips are from the 1990 John Hughes masterpiece known as Home Alone.

Everything Wrong With Iron Man 3 According To Fans

Iron Man 3 was plenty sinful, so much so that we turned over to our fans the keys to the sin counter. This entire video–every sin, every outtake, the bonus round, and even the sentencing–is fan-suggested.

Over 20,000 individual sin submissions from over 5,000 participants.

Guns ‘N Roses – Sweet Child o’ Mine – Guzheng Cover

NEXT PAGE: Honest After Earth Trailer…

Miss Piggy Sings ‘Wrecking Ball’ by Miley Cyrus

Miss Piggy sings the Miley Cyrus hit ‘Wrecking Ball’ in honor of her one true love, Kermit the Frog. Video by Mylo the Cat.

Honest Trailers – After Earth

Will Smith’s latest flick After Earth is so bad – we honestly had trouble finishing this one. Can we please finally all agree to not let M. Night Shyamalan make any more movies??

Jimmy Fallon, Miley Cyrus & The Roots Sing “We Can’t Stop” (A Cappella)

Jimmy, Miley, and The Roots perform an a cappella version of “We Can’t Stop.”

Real People, Fake Arms with Miley Cyrus

Jimmy and Miley debate the authenticity of their arms when working together on the Canadian soap opera “Jacob’s Patience” and show a clip to settle the score.

NEXT PAGE: Homeland Gnome Parody….

BOOKER, CATCH! (Bioshock Infinite w/ Chris Hardwick & Chloe Dykstra)

Making his way through the floating city of Columbia, Booker DeWitt is a man on a mission! Luckily his ever helpful companion, Elizabeth, is always around to keep him stocked up on supplies, even if she might get a little overzealous with her throwing. Booker, Catch!

H.P. LOVECRAFT Fishman with Joel Harlow: Blood and Guts with Scott Ian

Join host Scott Ian as he gets a Lovecraftian Fishman makeup treatment from Joel Harlow (Pirates of the Carribean trilogy, Dark Shadows, Star Trek, Adaptation, Lone Ranger and more!).

GNOMELAND (Homeland Parody)

Get addicted to Showtime’s newest hit GNOMELAND!

Minecraft Foam Diamond Sword from ThinkGeek

-Your very own Diamond Sword from Minecraft
-Crafted from durable EVA foam
-Great accessory for costumes and YouTube videos
-Officially licensed Minecraft collectible

That’s all for today, folks! Be sure to check back tomorrow for more movie-related geekery.

Today’s picks have been brought to you by: ThinkGeekComedivaCineFix, Rappy McRapperson, io9NerdistlatenightScreen JunkiesNewsBeFunnyCinemaSins, isthishowyougoviral, Michelle Kwan and Mental Floss.