1. On January 27, 1891, Charles McPherson opened the first movie theater in Los Angeles. It was called the Grand Opera House and showed 10-minute long silent films. This marked the beginning of the movie industry in California.

2. In 1973, on January 27, the iconic rock band the Grateful Dead performed a concert at the Maples Pavilion at Stanford University in Palo Alto, California. This concert is famous among fans and is often referred to as "Dick's Picks Volume 14."

3. On January 27, 1945, Los Angeles experienced one of its worst floods in history. Heavy rains caused the Los Angeles River to overflow, resulting in widespread damage and flooding in the surrounding neighborhoods. Over 5,000 homes were destroyed and 13 people lost their lives.

4. In 1847, on January 27, the town of Yerba Buena in San Francisco was officially renamed to San Francisco. The name change was made to reflect the expanding size and importance of the city.

5. On January 27, 1967, the groundbreaking comedy series "Rowan & Martin's Laugh-In" premiered on NBC. The show, which was filmed in Burbank, California, pushed boundaries with its irreverent humor and zany sketches. It went on to become a cultural phenomenon and launched the careers of many comedians, including Goldie Hawn and Lily Tomlin.