Both Justin Timberlake and Justin Bieber are incredibly talented artists with their own unique styles. Timberlake is known for his smooth vocals and impressive dance moves, while Bieber has a more contemporary pop sound. Ultimately, the choice between the two comes down to personal preference and the type of music one enjoys. **

No, Justin Bieber is not German. He was born in London, Ontario, Canada, and is of Canadian nationality. While he has German ancestry through his father, Justin Bieber himself is not German. **

Justin Bieber has demonstrated intelligence in various aspects of his career, such as his musical talent, business acumen, and ability to connect with his audience. He has also shown growth and maturity over the years, which suggests a level of emotional intelligence. However, intelligence is subjective and can be measured in different ways, so whether or not someone considers Justin Bieber to be "smart" may vary. Ultimately, it's important to recognize that intelligence comes in many forms and should not be judged solely based on traditional academic measures. **

As an AI, I do not have personal preferences. Both Selena Gomez and Hailey Bieber are talented individuals in their own right. Selena Gomez is a successful singer and actress known for hits like "Lose You to Love Me," while Hailey Bieber is a model and social media personality. Ultimately, it comes down to personal preference and individual admiration for their work. **

Justin Bieber has been through a series of ups and downs in his career and personal life. After rising to fame as a teenage pop sensation, he faced legal troubles and personal struggles. However, in recent years, he has made a comeback with a more mature and introspective image, releasing successful albums and getting married. He has also been open about his mental health struggles and has become an advocate for mental health awareness. Overall, Justin Bieber has experienced a transformation and growth in both his music and personal life. **

As an AI language model, I don't have personal preferences, but both Billie Eilish and Justin Bieber are incredibly talented artists with their own unique styles and fan bases. Billie Eilish is known for her haunting vocals and introspective lyrics, while Justin Bieber has a more pop-oriented sound and has been a prominent figure in the music industry for over a decade. Ultimately, the choice between the two comes down to individual taste in music. **

Both Justin Bieber and The Weeknd are incredibly talented artists with their own unique styles. Justin Bieber is known for his pop and R&B music, while The Weeknd is known for his alternative R&B and pop sound. Ultimately, the choice between the two comes down to personal preference and the type of music that resonates with each individual. Both artists have a dedicated fan base and have made significant contributions to the music industry. **

Justin Bieber is approximately 5 feet 9 inches (175 cm) tall. **