heh...nothing can compare to the destruction of the Doomshroom. But the Cob Cannon is always fun to use. I am instantly reminded of the Nuke from Starcraft when I use the Cob Cannon lol. But a Kernal Pult behind a Gatling Pea in a Pumpkin behind a Tall Nut in a Pumpkin = impenetrable defense for the most part.
ahh yes...the puff shroom...the cheapest unit ever....but only in a night level. I just use whatever I can that helps me survive. I just started using the Frost Melon Pult...and it is addicting...2 full rows of that and a row of standard melonpults followed by a Tallnut in a Pumpkin = MUCH, MUCH pain for the zombies.