When Drake and Josh are watching TV, you can hear an old sketch from The Amanda Show (1999) in the background, which both stars appeared on before moving on to this show.
However mentioned periodically throughout the series, this is the only episode in which Trevor appears in.
Trevor does not make future appearances so it can be assumed he was banned from the Parker-Nichols house following the events of this episode.
For some reason, this episode is unavailable to stream on online services such as ITunes and Paramount+. It is available however on the out of print "Suddenly Brothers" and "Best of Seasons 1&2" DVDs. However it was omitted on the re-release version of "Best of Seasons 1&2".