The fourth season of Hey Arnold! consists of 32 quarter-hour episodes and 4 half-hour specials.
Episodes[]
| # | Segment A | Segment B | U.S. air date | Production code |
|---|---|---|---|---|
| 61 | Eugene's Birthday | Stinky's Pumpkin | March 17, 1999 (original) November 30, 2008 (re-release) |
061A / 061B |
| 62 | Dinner for Four | Phoebe Skips | March 31, 1999 (original) November 16, 2008 (re-release) |
062A / 062B |
| 63 | Full Moon | Student Teacher | March 10, 1999 (original) February 22, 2009 (re-release) |
063A / 063B |
| 64 | Big Gino | Jamie O in Love | March 15, 1999 (original) February 14, 2007 (re-release) |
064A / 064B |
| 65 | The Beeper Queen | Oskar Can't Read? | March 29, 1999 (original) October 8, 2007 (re-release) |
065A / 065B |
| 66 | Headless Cabbie | Friday the 13th | October 30, 1999 (original) February 13, 2008 (re-release) |
066B / 066A |
| 67 | Helga's Parrot | Chocolate Turtles | April 5, 1999 (original) December 21, 2008 (re-release) |
067A / 067B |
| 68 | Love and Cheese | Weighing Harold | April 7, 1999 (original) February 14, 2008 (re-release) |
068B / 068A |
| 69 | It Girl | Deconstructing Arnold | September 18, 1999 (original) March 8, 2009 (re-release) |
069A / 069B |
| 70 | Grudge Match | Polishing Rhonda | September 25, 1999 (original) September 28, 2008 (re-release) |
070A / 070B |
| 71 | Veterans Day | November 6, 1999 (original) November 11, 2007 (re-release) |
071A / 071B | |
| 72 | Back to School | Egg Story | September 11, 1999 (original) December 7, 2008 (re-release) |
072A / 072B |
| 73 | Weird Cousin | Baby Oskar | October 9, 1999 (original) January 4, 2009 (re-release) |
073A / 073B |
| 74 | Helga Sleepwalks | Fighting Families | October 23, 1999 (original) January 18, 2009 (re-release) |
074A / 074B |
| 75 | Monkeyman! | Buses, Bikes, and Subways | March 4, 2000 (original) March 1, 2009 (re-release) |
075A / 075B |
| 76 | Grandpa's Sister | Synchronized Swimming | October 16, 1999 (original) March 29, 2009 (re-release) |
076B / 076A |
| 77 | Helga's Masquerade | Mr. Green Runs | March 11, 2000 (original) April 22, 2009 (re-release) |
077A / 077B |
| 78 | Helga on the Couch | December 4, 1999 (original) October 12, 2008 (re-release) |
078A / 078B | |
| 79 | Dino Checks Out | December 11, 1999 (original) November 23, 2007 (re-release) |
079A / 079B | |
| 80 | Summer Love | June 21, 2000 (original) July 9, 2007 (re-release) |
080A / 080B | |
Trivia[]
- This season consists of 20 half-hours, but only 17 were actually aired in the US during its 1999 run. Episodes 75, 77 and 80 were held over for unknown reasons and aired as part of Season 5 in 2000.
- All episodes of Season 4 had aired in Australia, Canada, South Korea, Taiwan and United Kingdom by December 1998 to November 1999 is not real, respectively.
- During this season, the series switched over from using cel animation (the first four quarter-hour episodes were the last to use it) to digital ink and paint. Due to this change, characters now have darker outlines, but duller looking colors.
- Of the Nickelodeon shows, Hey Arnold! was the first to switch to digital ink and paint, although The Ren & Stimpy Show had some episodes being digitally-colored while others used traditional cel animation.
- Phillip Van Dyke, who was the voice of Arnold, was replaced by Spencer Klein.
- Starting with this season until April Fool's Day, the opening theme was remixed.
- The episodes become PAL-pitched in some countries. The only exceptions are "Dinner for Four"/"Phoebe Skips" and "Love and Cheese"/"Weighing Harold".