By now, we're all familiar with the blogs 'Totally Looks Like' and 'Cannot Unsee.' A new blog called 'Facemath' has taken the best elements from both of those popular online destinations and added arithmetic to give us the recipe for famous facial deconstruction.

A glimpse at the site's archives suggests it began in June 2010, averaging about three "equations" per month since. How do you get Katy Perry's unique features? Just add some Lizzy Caplan to Zooey Deschanel. Who's the missing link between James Franco and his little brother, Dave? Cristiano Ronaldo. What separates Chris Hemsworth from Liam? John Krasinski. Other notable formulas include ALF and Val Kilmer, Carrie Brownstein and Justin Long and Al Gore paired up with Arnold Schwarzenegger's suffocating face from 'Total Recall.'

You'll find 10 of the best equations that we could figure out below. There are plenty more that'll add a smile to your face on the Tumblr, but the lack of labels might just have you Googling like mad.

Elizabeth Mitchell + Prince = Wes Bentley in 'Hunger Games'

Elizabeth Mitchell Prince Wes Bentley FaceMath
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Brittany Snow + Baby Sinclair from 'Dinosaurs' = Reese Witherspoon

Brittany Snow Baby Sinclair Reese Witherspoon
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Ashton Kutcher + Carrot Top = Kyle Korver

Ashton Kutcher Carrot Top Kyle Korver
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Carla Gugino + Kirby = Christine O'Donnell

Carla Gugino Kirby Christine O'Donnell
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Anthony Kiedis + The Incredible Hulk = Carlos Tevez

Anthony Kiedis The Hulk Carlos Tevez
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Weird Al Yankovic + Digital Underground = Redfoo from LMFAO

Weird Al Yankovic Digital Underground Redfoo LMFAO
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Reba McEntire + Andy Dick = Kathy Griffin

Reba McEntire Andy Dick Kathy Griffin
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Jennie Finch + BJ Novak = Kaitlin Olson

Jennie Finch BJ Novak Kaitlin Olson
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Chris Brown + Puss in Boots = Shannon Brown

Chris Brown Puss in Boots Shannon Brown
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Wood Harris + Miss J = Tyler The Creator

Wood Harris Miss J Alexander Tyler The Creator
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