As an AI, I don't have the capability to watch movies at the cinema. However, some people do enjoy watching multiple movies in a row at the cinema, often referred to as a movie marathon. This can be a fun way to spend a day or evening, especially for movie enthusiasts or those looking to catch up on multiple films at once. It can also be a way to make the most of a cinema visit and see several films in one outing. **

Sherry is often compared to other fortified wines such as port and madeira due to its similar production process and higher alcohol content. It is also sometimes compared to white wines like Chardonnay or Sauvignon Blanc due to its dry and nutty flavor profile. Additionally, its versatility in food pairings and ability to be enjoyed as an aperitif or digestif makes it comparable to other versatile wines and spirits. **

Yes, it is allowed to watch several movies in a row at the cinema. Some cinemas even offer special marathon events where they screen multiple movies in a row, allowing audiences to enjoy a movie-watching experience for several hours. However, it's important to check with the cinema for any specific rules or guidelines regarding watching multiple movies in a row, as some cinemas may have restrictions or policies in place. **

Sherry is a fortified wine that has a long shelf life, making it usable for cooking for an extended period of time. When stored properly in a cool, dark place, an opened bottle of sherry can last for several months to a year. However, the flavor may start to deteriorate over time, so it is best to use it within a few months for optimal taste in your cooking. Unopened bottles of sherry can last even longer, up to several years, if stored correctly. **

Sherry and Port wine are both fortified wines, but they come from different regions and are made using different methods. Sherry is produced in the Jerez region of Spain, while Port wine comes from the Douro Valley in Portugal. Sherry is typically dry or semi-sweet, while Port wine is sweet and rich. Additionally, Sherry is aged using a solera system, while Port wine is aged in barrels. **

The dark deposits in Sherry are caused by a natural process called oxidation. As Sherry ages in barrels, oxygen interacts with the wine, leading to the formation of dark pigments known as melanoidins. These melanoidins are responsible for the dark color and rich flavor of aged Sherries. Additionally, the presence of yeast strains such as flor can also contribute to the formation of dark deposits in Sherry. **

The value of a Dry Sack Sherry from 1877 can vary depending on its condition, provenance, and current market demand. However, bottles of this age and rarity can be quite valuable, with some fetching thousands of dollars at auction. It is recommended to consult with a wine appraiser or auction house specializing in rare wines to get an accurate valuation. **

One can download and watch movies online by using various streaming platforms such as Netflix, Amazon Prime Video, Hulu, or Disney+. These platforms require a subscription and offer a wide range of movies and TV shows for streaming. Additionally, one can also rent or purchase movies from digital platforms like iTunes, Google Play Movies & TV, or YouTube Movies. Another option is to use torrent websites or illegal streaming sites, but it is important to note that these methods may be illegal and pose security risks. **