Hey Arnold! Season 4 Episode 23
Grandpa's Sister
Phil's twin sister comes for a visit, bringing along an unsettled conflict between them.
4 - 31Dino Checks OutDec. 11, 1999- 4 - 30Helga on the CouchDec. 04, 1999
- 4 - 29Veterans DayNov. 06, 1999
- 4 - 28Friday the 13thOct. 30, 1999
- 4 - 27Headless CabbieOct. 30, 1999
- 4 - 26Fighting FamiliesOct. 23, 1999
- 4 - 25Helga SleepwalksOct. 23, 1999
- 4 - 24Synchronized SwimmingOct. 16, 1999
- 4 - 23Grandpa's SisterOct. 16, 1999
- 4 - 22Baby OskarOct. 09, 1999
- 4 - 21Weird CousinOct. 09, 1999
- 4 - 20Polishing RhondaSep. 25, 1999
- 4 - 19Grudge MatchSep. 25, 1999
- 4 - 18Deconstructing ArnoldSep. 18, 1999
- 4 - 17It GirlSep. 18, 1999
- 4 - 16Egg StorySep. 11, 1999
- 4 - 15Back to SchoolSep. 11, 1999
- 4 - 14Weighing HaroldApr. 07, 1999
- 4 - 13Love and CheeseApr. 07, 1999
- 4 - 12Chocolate TurtlesApr. 05, 1999
- 4 - 11Helga's ParrotApr. 05, 1999
- 4 - 10Phoebe SkipsMar. 31, 1999
- 4 - 9Dinner for FourMar. 31, 1999
- 4 - 8Oskar Can't Read?Mar. 29, 1999
- 4 - 7The Beeper QueenMar. 29, 1999
- 4 - 6Stinky's PumpkinMar. 17, 1999
- 4 - 5Eugene's BirthdayMar. 17, 1999
- 4 - 4Jamie O in LoveMar. 15, 1999
- 4 - 3Big GinoMar. 15, 1999
- 4 - 2Student TeacherMar. 10, 1999
- 4 - 1Full MoonMar. 10, 1999
