Super Mario Sunshine is here already. Way to go fast! Read it up and then scroll down and submit.

3rd Place:

Crikey! We're gonna sneak up on this choco-beastie 'ere, even though they hate havin' that done to 'em. Ain't this one a beaut? 'an I'm gonna spray it with this here water tank even though it's gonna make 'er really angry and try ta kill me. Here goes nuttin', mate! (Durinthal)

2nd Place:

Mario- Hut, hut. Heres we Go! Wooooooooooo.........::biff, pow, bang, crash, boom, naka-naka:: Now thas the ways to eat sa chocolate. (ChaosW308)

1st Place:

Mario, steering away from the degrading job as a plumber, is rewarded when he chooses a career as a gardener. (Grey Mage Sam)

Honorable Mentions:

chocolate piranha plant thing: "mario, you have a bug on your back."
mario: "oh, could you brush it off please?"
chocolate piranha plant thing: "um...no." (KingMike36)

 

looks like mario clogged up the toilet again and by the equipment he has, he's gunna attempt to unclog it.  Italian food = high in fiber.(chazwuzhere@Cox. net)

 

As Mario looked up from the sewer pipes to see the plant, he wondered what the hell Bowser ate. (ANTZerox1)

With the water tool selected and ready to fire, Mario prepares his patented "Bidet Attack." (WillyTheTunaFish)

Mario and his plunger ray come to save the kingdom from the backed up septic tank. (DolphinSWf)

Mario: Mmmmmmm.  Chocolate.
Ball Of Mud: Mmmmmm.  Psychotic italian plumber.
Camera Guy:  Run!  Its the floating coins and numerals of doom! (Gamer30128)

As the horrendous brown beast lunged forward, escape for Mario seemed hopeless.
When suddenly...
Shigeru Miyamoto suffered a fatal heart attack!
The polygonal peril was no more. (GG Chrono 4)

Next, on When Meatballs Attack... (ChanneLZXP)