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Episode 4
Rachel and Jason test the tastiest electronic toothbrushes on the market. Polly pushes a mechanical Mantis around and Jon picks out the smartest android smartphone.
![](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![](https://image.tmdb.org/t/p/w300/GQXJrXpjlaFTtZ593sxARGSLEm.jpg)
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Other episodes for this season
![Google Glasses](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![Free-to-Air TV](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![Teched-up Halloween](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![Episode 4](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![Episode 5](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![Episode 6](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![Episode 7](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![Christmas Special](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![250th Episode Special](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![Episode 10](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![Christmas Stocking](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![Episode 12](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
![Episode 13](https://image.tmdb.org/t/p/w300/jo7t8sd5efrcLQF5B2WTZYHLd3A.jpg)
Rachel and Jason test the tastiest electronic toothbrushes on the market. Polly pushes a mechanical Mantis around and Jon picks out the smartest android smartphone.