User blog comment:Broman178/Should the filler episodes be stopped?/@comment-114.73.55.41-20120123042536/@comment-4650675-20120123094852

Fillers are episodes that are basically used to fill the rest of the episodes, when the storyline episodes are complete. Some of them do have some continuity, like the herald of the new age, but some of them are complete fillers that have nothing to do with the rest of the series. For example, the sorcerer's shadow wasn't a complete filler, since we saw Arthur trying to convince his father not to participate because he cared for him, whereas Morgana pushed him forward just to have him killed. Also Merlin showed how much he had grown and was able to guide a new sorcerer to the path of good. The episodes that are 100% pure fillers are: 1) 1x06 a remedy to cure all ilnesses

2)1x11 the labyrinth of Gendref(although it explores Arthur's character a bit)

3)2x05-06 the beauty and the beast(why was that even a two-parter?)

4)2x10 sweet dreams(that is, if the princess does not reappear)

5)3x03 the goblin's gold(definitely nothing to do with the plot, besides Gaius exploring Morgana's transition to evil and some evil smirks from her side, if you call that plot)

6)3x06 the changeling (not a PURE filler, since Morgana becomes aware of Gwen's feelings for Arthur and it is a major plotline in the future episodes)

7)3x10 love in the time of dragons(complete filler, it only explores Gaius' past a bit)

Plus the three episodes mentioned by Dryuuu, we have 10 filler episodes in total! Watch them and you'll definitely understand what a filler is. Happy watching :)