Discovery Showcase HD Tonight

How the Universe Works (S4E5)
Alaska Mega Machines (S1E5)
Smash Lab (S1E15)
Dirty Jobs (S2E39)
Extreme Engineering (S6E1)
Extreme Engineering (S3E1)
I Almost Got Away With It (S2E21)
Cake Boss (S4E3)
Cake Boss (S4E4)
Smash Lab (S1E15)

On Discovery Showcase HD tonight you can watch How the Universe Works, Alaska Mega Machines, Smash Lab, Dirty Jobs, Extreme Engineering, I Almost Got Away With It, Cake Boss
Discovery Showcase HD today
Discovery Showcase HD tonight