Bad Influence! is an early to mid-1990s British factual television programme broadcast on CITV between 1992 and 1996, and was produced in Leeds by Yorkshire Television (now known as ITV Studios). It looked at video games and computer technology, and was described as a "kid’s Tomorrow's World". It was shown on Thursday afternoons and had a run of four series of between 13 and 15 shows, each of 20 minutes duration. For three of the four series, it had the highest ratings of any CITV programme at the time. Its working title was Deep Techies, a colloquial term derived from 'techies' basically meaning technology-obsessed individuals.

Bad Influence! began during the 16 bit-era of computer and video gaming, and featured in-depth news, previews and reviews about the very latest in gaming and computer technology. The series ran long enough to feature the launch of the Nintendo 64 console (then acknowledged by its working title, the Ultra 64) in its fourth and final series. The show was originally presented by then children's TV presenters Violet Berlin and Andy Crane (of 1980s CBBC broom cupboard fame), who were studio based, and US teen actor Z Wright, who filed location reports from the US until Series 4. There was also a cheats segment character called Nam Rood (which is "Door Man" spelled backwards), an anarchic 'furtler' (AKA 'techie') who lived in a shed in the first two series, and then in the basement for Series 3. He would give viewers gaming cheats (written on cards he would stick to his forehead) in between mock experiment comedy sketches three times per episode. He would always greet viewers with his trademark catchphrases "slimy furtlers" and "scrotty furtlers", the term "furtlers" equating to the term "techies".

In Series 1, a spin-off Bad Influence! magazine was launched by Europress and promoted on the show, however only two editions were ever published.

In Series 2, as part of a report, Violet Berlin was included as a character in the Mega Drive game Micro Machines 2. She was also included in another video game in Series 4.

In Series 3, the show experienced a revamp. The virtual reality title sequence and credits, which by the end of Series 2 had begun to look somewhat dated, were replaced by a new, industrial-style title sequence, influenced by the mega-flop beat-em-up Rise of the Robots. There was also a remixed, industrial-style theme tune and a slightly more anarchic feel to the show, suggesting it was now targeting a slightly older teen audience. This demographic refocusing was in tune with gaming trends which were moving more towards older teens and younger adults, yet at odds with CITV viewer trends which showed that CITV audiences were actually getting younger. Also in Series 3, the Datablast section only appeared once, at the end of the series, which would prove to be its final appearance. Also making their final appearance were Z Wright and Nam Rood. In Series 4, the final series, Z Wright had been replaced by Violet Berlin presenting global reports (rather than solely US reports) and she was also granted her own slot, called Virtual Violet. Back in the studio, Crane was now joined by new co-presenter Sonya Saul. Nam Rood and the Datablast had both been discarded. In the final edition, Berlin, Crane and Saul all presented together in the studio, the only time this ever occurred.

Shortly after the 4th series ended, a report on the now defunct television information service Teletext reported that plans were afoot to remarket Bad Influence at a younger audience if it were to get a Series 5. However these plans were never implemented, most likely because gamers were getting older whilst CITV's audience was getting younger, and so would have had little appeal to CITV's increasingly younger audience. Subsequently, a fifth series was not commissioned and the show was axed.