Spider-Plant Man is a parody of Spider-Man, made for the Comic Relief 2005 appeal and aired on BBC One on March 11, 2005. It featured Rowan Atkinson as Peter Piper/Spider-Plant Man and Rachel Stevens as his love-interest Jane-Mary (parodying Mary-Jane Watson). Jim Broadbent also made an appearance, portraying Batman, and Tony Robinson as Robin.
Piper leaves the lab via a back door, sits in a dark alley, sweating, and begins to turns green. His molecular structure is shown to be changing with the text "This means something nasty is happening". When he wakes up, he finds that when he stretches, plants shoot from his arms. He is also able to climb walls.
Piper is then shown sitting on a roof, when he sees that Jane-Mary is getting mugged. He goes to save her, but he realises that he needs a costume. He appears in the alley in an Indian costume, a fairy costume and eventually in his Spider-Plant suit. He saves Jane-Mary, who falls in love with him. He suggests to her that he might be Peter Piper, only to be told that Piper is a loser.
Spider-Plant Man is then shown landing in an alley where another man says he is his enemy. Peter guesses that he is The Green Goblin, Doctor Octopus or The Human Man, but it appears to be Batman. Batman tells him that no one cares about him anymore and that everyone only wants spiders nowadays. He tells Piper that he has kidnapped Jane-Mary and Piper guesses that she is on Tower Bridge.
Spider-Plant Man swings through London, wondering where Tower Bridge is, while Batman takes the Underground to Tower Bridge. On Tower Bridge, Spider-Plant Man and Batman begin to fight, where they are mistaken by a reporter for Fathers 4 Justice activists. Peter fires a spider plant at him, followed by Batman throwing his boomerang and the battle goes on.
Batman's sidekick Robin (played by Tony Robinson) arrives, and makes a deal with Batman for 20% of the profits on Batman products and a Robinmobile and starts attacking Peter. Whilst hanging from Tower Bridge, Spider-Plant Man makes a deal with Robin for 25% on all pyjama sales and his own cereal brand with real marshmallows, Robin switches sides and attacks Batman. Batman is punched off the tower and lands on the reporter. He hijacks a scooter and gets away.
Spider-Plant Man and Jane-Mary start to kiss. Robin tells Peter it's time to go and moments later Peter punches him. He then asks Jane-Mary whether she will marry him, and she responds, "Who am I marrying, Spider-Plant Man or the man behind the spandex?" He replys, "You decide". Jane-Mary is then shown lying in the sun on a beach, next to Piper who is still in his Spider-Plant suit.