1x1 - Tug-of-War Challenge

April 23, 2005

Nothing is impossible! A super-special project to become a top-notch celebrity! "Infinite Challenge"!! The reckless class president, Yoo Jae-seok! The king of hair, Pyo Young-ho! Jeong Hyeong-don, a life lived with one strength! Only the mouth lived! Dr. Noh Hong-cheol! The special guest is Michael Jackson from Korea! Dancer Lee, Lee Jung!! Part 1 of the Super Member's Infinite Challenge! Engage in a tug-of-war with an 800kg bull, the emperor of bullfighting who conquered the whole country! Surprised by the bull's strength, the Infinite Challenge team... Group tire dragging, angry Jeong Hyeong-don struggles.. Severe training continues.. An unpredictable super-special challenge, bull vs human power confrontation!! This Saturday, the laughter bombing begins!!

1x2 - 100-Meter Sprint

April 30, 2005

1x3 - Motorboat vs. Paddle Boat

May 7, 2005

1x4 - Public Bath Challenge

May 14, 2005

1x5 - Dog-Paddle Swimming Challenge

May 21, 2005

1x6 - Clothes-Washing Challenge

May 28, 2005

1x7 - Collecting Coin Challenge

June 4, 2005

1x8 - Stand-Up Challenge

June 11, 2005

1x9 - Car-Washing Challenge

June 18, 2005

1x10 - Pump Challenge

June 25, 2005

1x11 - Digging Challenge

July 2, 2005

1x12 - Special Coverage from Guam - Part 1

July 9, 2005

1x13 - Special Coverage from Guam - Part 2

July 16, 2005

1x14 - Make-a-Noise Challenge

July 23, 2005

1x16 - Summer Special: The Ghost-house Challenge

August 6, 2005

1x17 - Briquette Removal Challenge

August 13, 2005

1x18 - Special Coverage: Top 5 Highlights of 'Reckless Challenge'

August 20, 2005

1x19 - Car-Push Challenge

August 27, 2005

1x20 - Drag the Sled Challenge

September 3, 2005

1x21 - Count 60 Seconds at High Altitude

September 10, 2005

1x22 - Esper Ito vs. Infinite Challenge Members

September 17, 2005

1x23 - Maria Sharapova vs. Infinite Challenge Members, Part 1

September 24, 2005

1x24 - Maria Sharapova vs. Infinite Challenge Members, Part 2

October 1, 2005

1x25 - Arm Wrestling Challenge

October 8, 2005

1x26 - Applying Lipstick on Carnival Rides

October 15, 2005

1x27 - Reckless Challenge Best Moments + Unaired Race with Ostrich Challenge Scene

October 22, 2005