Satyameva Jayathe, director Rafi Meccartin offered Salim a role in his movie Thenkasipattanam, which was a major breakthrough in his film career. It was one of the highest grossing movie of 2000. In the movie One Man Show, he played the memorable role of a patient escaped from mental hospital. Salim Kumar then found success while acting along with Dileep. In some movies, the duo is joined by Harishree Ashokan. In the 2001 slapstick comedy movie Ee Parakkum Thalika, he played the role of cook Koshi while in the 2002 cult comedy movie Meesa Madhavan, he did the role of Advocate Mukundan Unni. He is also remembered for his performances alongside Cochin Haneefa in Mazhathullikkilukkam and Kunjikkoonan. In the movie Kalyanaraman, Salim Kumar played the role of Pyaari, which is considered one of the finest comedy performance in his career. He played one of the lead roles in the 2002 slapstick comedy film Bamboo Boys alongside Kalabhavan Mani, Cochin Haneefa and Harishree Ashokan. Salim Kumar probably played some of the most memorable comedy roles in his career in 2003. He played the character of a psychic mental patient in the classic cult movie C.I.D. Moosa. His role as Omanakkuttan in Thilakkam, Usman in Kilichundan Mampazham alongside Mohanlal and S.I. Gabbar Keshavan in Pattalam were memorable ones. It was in the romantic-comedy movie Pulival Kalyanam that Salim Kumar played the most memorable character in his career. Most of the critics acclaims this character called Manavalan as the best comedy character played by Salim Kumar. The many expressions of Manavalan, including his helpless face, his coy smile and act as a rich man smoking pipe later developed a cult following in Kerala and are widely used in memes. Alongside Jayasurya, Salim Kumar's other famous role is Dance Master Vikram in the movie Chathikkatha Chandu (2004). One of the other popular character played by Salim Kumar came out in the 2007 Mammootty movie Mayavi. His character called Kannan Srank/Ashan has been widely used in Malayalam memes. Salim Kumar's potential to do the character roles were revealed in 2004, after receiving critical acclaim for his role in the Kamal movie Perumazhakkalam. Though slightly comedic, the role was realistic, allowing him to display different acting skills. His role as the father in Achanurangatha Veedu (2005), directed by Lal Jose, was a major break in his acting career, when he was able to shrug off the